Major Competitive Exams

Civil Services Defence Exams Engineering & Architecture Admissions Government Jobs Management Admissions Undergraduate

Q. A car of mass 1000 kg is moving at a speed of 15 m/s. What is the kinetic energy of the car?

A. 11250 J
B. 22500 J
C. 33750 J
D. 45000 J

Solution

Kinetic energy KE = (1/2)mv² = (1/2)(1000 kg)(15 m/s)² = 11250 J.

Correct Answer: B — 22500 J

Learn More →

Q. A car of mass 1000 kg is moving at a speed of 20 m/s. What is its kinetic energy?

A. 200 J
B. 400 J
C. 200,000 J
D. 400,000 J

Solution

Kinetic energy is given by KE = 0.5mv². Here, KE = 0.5 * 1000 * (20)² = 200,000 J.

Correct Answer: C — 200,000 J

Learn More →

Q. A car of mass 1000 kg is moving at a speed of 20 m/s. What is its total mechanical energy assuming no friction?

A. 200,000 J
B. 400,000 J
C. 300,000 J
D. 100,000 J

Solution

Total Mechanical Energy = Kinetic Energy + Potential Energy. KE = 1/2 * m * v^2 = 1/2 * 1000 * (20^2) = 200,000 J (assuming PE = 0)

Correct Answer: B — 400,000 J

Learn More →

Q. A car of mass 1000 kg is moving with a speed of 20 m/s. What is its kinetic energy?

A. 200,000 J
B. 400,000 J
C. 800,000 J
D. 1,000,000 J

Solution

Kinetic Energy = 0.5 × mass × velocity² = 0.5 × 1000 kg × (20 m/s)² = 200,000 J.

Correct Answer: B — 400,000 J

Learn More →

Q. A car of mass 1000 kg is moving with a velocity of 15 m/s. What is the kinetic energy of the car?

A. 11250 J
B. 15000 J
C. 22500 J
D. 30000 J

Solution

Kinetic energy KE = (1/2)mv² = (1/2)(1000 kg)(15 m/s)² = 11250 J.

Correct Answer: A — 11250 J

Learn More →

Q. A car of mass 1000 kg is moving with a velocity of 20 m/s. If the brakes are applied and the car comes to a stop in 5 seconds, what is the average force applied by the brakes?

A. 2000 N
B. 4000 N
C. 5000 N
D. 6000 N

Solution

The change in momentum is 1000 kg * 20 m/s = 20000 kg·m/s. The average force is F = Δp/Δt = 20000 kg·m/s / 5 s = 4000 N.

Correct Answer: B — 4000 N

Learn More →

Q. A car of mass 1000 kg is moving with a velocity of 20 m/s. What is the momentum of the car?

A. 2000 kg·m/s
B. 10000 kg·m/s
C. 5000 kg·m/s
D. 40000 kg·m/s

Solution

Momentum p = mv = 1000 kg * 20 m/s = 20000 kg·m/s.

Correct Answer: B — 10000 kg·m/s

Learn More →

Q. A car of mass 1000 kg is moving with a velocity of 20 m/s. What is the net force required to bring it to rest in 5 seconds?

A. 4000 N
B. 2000 N
C. 1000 N
D. 500 N

Solution

First, find the deceleration: a = (final velocity - initial velocity) / time = (0 - 20 m/s) / 5 s = -4 m/s². Then, F = ma = 1000 kg * 4 m/s² = 4000 N.

Correct Answer: A — 4000 N

Learn More →

Q. A car travels 100 km in 1.5 hours. What is its average speed? (2019)

A. 60 km/h
B. 65 km/h
C. 70 km/h
D. 75 km/h

Solution

Average speed = Distance / Time = 100 km / 1.5 hours = 66.67 km/h, which rounds to 60 km/h.

Correct Answer: A — 60 km/h

Learn More →

Q. A car travels 100 km in 2 hours and then 50 km in 1 hour. What is the average speed of the car for the entire journey? (2021)

A. 50 km/h
B. 60 km/h
C. 70 km/h
D. 75 km/h

Solution

Total distance = 100 km + 50 km = 150 km. Total time = 2 h + 1 h = 3 h. Average speed = Total distance / Total time = 150 km / 3 h = 50 km/h.

Correct Answer: C — 70 km/h

Learn More →

Q. A car travels 100 km in 2 hours and then 50 km in 1 hour. What is the total average speed of the car? (2019)

A. 50 km/h
B. 60 km/h
C. 70 km/h
D. 80 km/h

Solution

Total distance = 100 + 50 = 150 km. Total time = 2 + 1 = 3 hours. Average speed = Total distance / Total time = 150/3 = 50 km/h.

Correct Answer: B — 60 km/h

Learn More →

Q. A car travels 100 m in 4 seconds. What is its average speed?

A. 20 m/s
B. 25 m/s
C. 30 m/s
D. 35 m/s

Solution

Average speed = total distance / total time = 100 m / 4 s = 25 m/s.

Correct Answer: B — 25 m/s

Learn More →

Q. A car travels 100 m in 5 seconds. What is its average speed?

A. 20 m/s
B. 25 m/s
C. 15 m/s
D. 30 m/s

Solution

Average speed = total distance / total time = 100 m / 5 s = 20 m/s.

Correct Answer: B — 25 m/s

Learn More →

Q. A car travels 100 m north and then 100 m east. What is the magnitude of the displacement from the starting point? (2000)

A. 100 m
B. 141.42 m
C. 200 m
D. 50 m

Solution

Displacement = √(100^2 + 100^2) = √20000 = 141.42 m.

Correct Answer: B — 141.42 m

Learn More →

Q. A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average speed of the car for the entire trip? (2020)

A. 75 km/h
B. 80 km/h
C. 85 km/h
D. 90 km/h

Solution

Total distance = 150 + 100 = 250 km. Total time = 2 + 1 = 3 hours. Average speed = Total distance / Total time = 250 km / 3 hours = 83.33 km/h, which rounds to 80 km/h.

Correct Answer: B — 80 km/h

Learn More →

Q. A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average speed of the car? (2022)

A. 75 km/h
B. 80 km/h
C. 85 km/h
D. 90 km/h

Solution

Total distance = 150 km + 100 km = 250 km. Total time = 2 hours + 1 hour = 3 hours. Average speed = Total distance / Total time = 250 km / 3 hours = 83.33 km/h, which rounds to 80 km/h.

Correct Answer: B — 80 km/h

Learn More →

Q. A car travels 150 km in 2.5 hours. What is its speed in km/h? (2020)

A. 55 km/h
B. 60 km/h
C. 65 km/h
D. 70 km/h

Solution

Speed = Distance / Time = 150 km / 2.5 hours = 60 km/h.

Correct Answer: B — 60 km/h

Learn More →

Q. A car travels 150 km in 3 hours. What is its average speed? (2022)

A. 40 km/h
B. 50 km/h
C. 60 km/h
D. 70 km/h

Solution

Average speed = Total distance / Total time = 150 km / 3 h = 50 km/h.

Correct Answer: B — 50 km/h

Learn More →

Q. A car travels 60 km in 1 hour and 30 minutes. What is its average speed in km/h?

A. 40
B. 50
C. 45
D. 60

Solution

Time taken is 1.5 hours. Average speed = distance/time = 60/1.5 = 40 km/h.

Correct Answer: C — 45

Learn More →

Q. A car travels 60 km in 1 hour and 30 minutes. What is the average speed of the car in km/h? (2019)

A. 40
B. 50
C. 45
D. 60

Solution

Time taken = 1.5 hours. Average speed = Distance / Time = 60 km / 1.5 h = 40 km/h.

Correct Answer: C — 45

Learn More →

Q. A car travels 60 km in 1 hour and then 90 km in 1.5 hours. What is the average speed of the car for the entire journey?

A. 70 km/h
B. 75 km/h
C. 80 km/h
D. 85 km/h

Solution

Total distance = 60 + 90 = 150 km. Total time = 1 + 1.5 = 2.5 hours. Average speed = Total distance / Total time = 150 / 2.5 = 60 km/h.

Correct Answer: B — 75 km/h

Learn More →

Q. A car travels 60 km in 1 hour. How far will it travel in 2.5 hours at the same speed? (2022)

A. 150 km
B. 120 km
C. 180 km
D. 100 km

Solution

Distance = Speed * Time = 60 km/h * 2.5 h = 150 km.

Correct Answer: A — 150 km

Learn More →

Q. A car travels 60 km in 1 hour. How far will it travel in 3 hours at the same speed? (2021)

A. 120 km
B. 150 km
C. 180 km
D. 200 km

Solution

Distance = speed × time = 60 km/h × 3 h = 180 km.

Correct Answer: C — 180 km

Learn More →

Q. A car travels 60 km in 1 hour. What is its speed in km/h? (2023)

A. 30 km/h
B. 60 km/h
C. 90 km/h
D. 120 km/h

Solution

Speed = Distance/Time = 60 km/1 h = 60 km/h

Correct Answer: B — 60 km/h

Learn More →

Q. A car travels a distance in the ratio of 3:2 at two different speeds. If the total distance is 150 km, how much distance does it cover at the first speed?

A. 90 km
B. 60 km
C. 75 km
D. 45 km

Solution

The total parts of the ratio 3:2 = 5. The distance covered at the first speed is (3/5) * 150 km = 90 km.

Correct Answer: A — 90 km

Learn More →

Q. A car travels a distance of 150 km at a speed of 50 km/h. How long does the journey take?

A. 2 hours
B. 3 hours
C. 4 hours
D. 5 hours

Solution

Time = distance/speed = 150 km / 50 km/h = 3 hours.

Correct Answer: B — 3 hours

Learn More →

Q. A car travels a distance of 150 m in 5 seconds. What is its average speed?

A. 25 m/s
B. 30 m/s
C. 35 m/s
D. 40 m/s

Solution

Average speed = total distance / total time = 150 m / 5 s = 30 m/s.

Correct Answer: A — 25 m/s

Learn More →

Q. A car travels around a circular track of radius 50 m at a speed of 15 m/s. What is the centripetal force acting on the car if its mass is 1000 kg?

A. 450 N
B. 225 N
C. 150 N
D. 75 N

Solution

Centripetal force (F_c) = mv²/r = 1000 kg * (15 m/s)² / 50 m = 4500 N.

Correct Answer: A — 450 N

Learn More →

Q. A car travels at 90 km/h and a truck at 60 km/h in opposite directions. What is the relative speed of the car with respect to the truck?

A. 30 km/h
B. 60 km/h
C. 150 km/h
D. 90 km/h

Solution

Relative speed = Speed of car + Speed of truck = 90 km/h + 60 km/h = 150 km/h.

Correct Answer: C — 150 km/h

Learn More →

Q. A car travels at a speed of 60 km/h and a bike travels at 40 km/h. What is the ratio of the speeds of the car to the bike?

A. 3:2
B. 2:3
C. 1:1
D. 4:3

Solution

The speed of the car is 60 km/h and the speed of the bike is 40 km/h. The ratio of their speeds is 60:40, which simplifies to 3:2.

Correct Answer: A — 3:2

Learn More →

Showing 721 to 750 of 27365 (913 Pages)

Major Competitive Exams

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?