Major Competitive Exams

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

Q. A 5 kg object is moving with a velocity of 3 m/s. What is its kinetic energy?

A. 22.5 J
B. 30 J
C. 45 J
D. 60 J

Solution

Kinetic Energy = 0.5 × mass × velocity² = 0.5 × 5 kg × (3 m/s)² = 22.5 J.

Correct Answer: A — 22.5 J

Learn More →

Q. A 5 kg object is moving with a velocity of 4 m/s. What is its momentum? (2023)

A. 10 kg m/s
B. 15 kg m/s
C. 20 kg m/s
D. 25 kg m/s

Solution

Momentum = mass × velocity = 5 kg × 4 m/s = 20 kg m/s.

Correct Answer: C — 20 kg m/s

Learn More →

Q. A 5 kg object is pulled with a force of 25 N. What is the acceleration of the object?

A. 2 m/s²
B. 3 m/s²
C. 4 m/s²
D. 5 m/s²

Solution

Using F = ma, acceleration a = F/m = 25 N / 5 kg = 5 m/s².

Correct Answer: C — 4 m/s²

Learn More →

Q. A 5 kg object is pushed with a force of 15 N. If the frictional force is 5 N, what is the acceleration of the object?

A. 1 m/s²
B. 2 m/s²
C. 3 m/s²
D. 4 m/s²

Solution

Net force = applied force - friction = 15 N - 5 N = 10 N. Acceleration = F/m = 10 N / 5 kg = 2 m/s².

Correct Answer: B — 2 m/s²

Learn More →

Q. A 5 kg object is subjected to a net force of 15 N. What is its acceleration?

A. 2 m/s²
B. 3 m/s²
C. 4 m/s²
D. 5 m/s²

Solution

Using F = ma, a = F/m = 15 N / 5 kg = 3 m/s².

Correct Answer: B — 3 m/s²

Learn More →

Q. A 5 kg object is subjected to a net force of 15 N. What is the object's acceleration?

A. 2 m/s²
B. 3 m/s²
C. 4 m/s²
D. 5 m/s²

Solution

Using F = ma, a = F/m = 15 N / 5 kg = 3 m/s².

Correct Answer: B — 3 m/s²

Learn More →

Q. A 5 kg object is subjected to a net force of 25 N. What is its acceleration?

A. 2 m/s²
B. 5 m/s²
C. 10 m/s²
D. 15 m/s²

Solution

Using F = ma, a = F/m = 25 N / 5 kg = 5 m/s².

Correct Answer: C — 10 m/s²

Learn More →

Q. A 5 kg object is thrown vertically upward with a speed of 20 m/s. What is the maximum height reached by the object? (g = 10 m/s²)

A. 20 m
B. 30 m
C. 40 m
D. 50 m

Solution

Using the formula h = v²/(2g) = (20 m/s)² / (2 * 10 m/s²) = 20 m.

Correct Answer: B — 30 m

Learn More →

Q. A 5 ohm resistor and a 10 ohm resistor are connected in series. What is the total resistance?

A. 15 ohms
B. 5 ohms
C. 10 ohms
D. 2 ohms

Solution

In series, the total resistance is R_total = R1 + R2 = 5 + 10 = 15 ohms.

Correct Answer: A — 15 ohms

Learn More →

Q. A 50 kg crate is at rest on a flat surface. What is the normal force acting on the crate?

A. 0 N
B. 50 N
C. 500 N
D. 1000 N

Solution

The normal force equals the weight of the crate, which is N = mg = 50 kg * 10 m/s² = 500 N.

Correct Answer: C — 500 N

Learn More →

Q. A 50 kg crate is pushed with a force of 200 N. If the frictional force is 50 N, what is the acceleration of the crate? (2022)

A. 2 m/s²
B. 3 m/s²
C. 4 m/s²
D. 5 m/s²

Solution

Net force = 200 N - 50 N = 150 N. Acceleration a = F/m = 150 N / 50 kg = 3 m/s².

Correct Answer: B — 3 m/s²

Learn More →

Q. A 50 kg crate is pushed with a force of 200 N. If the frictional force is 50 N, what is the acceleration? (2022)

A. 2 m/s²
B. 3 m/s²
C. 4 m/s²
D. 5 m/s²

Solution

Net force = applied force - friction = 200 N - 50 N = 150 N. Acceleration a = F/m = 150 N / 50 kg = 3 m/s².

Correct Answer: B — 3 m/s²

Learn More →

Q. A 50 kg crate is pushed with a force of 200 N. What is the acceleration of the crate? (Assume no friction) (2021)

A. 2 m/s²
B. 4 m/s²
C. 5 m/s²
D. 10 m/s²

Solution

Using F = ma, acceleration a = F/m = 200 N / 50 kg = 4 m/s².

Correct Answer: B — 4 m/s²

Learn More →

Q. A 50 kg object is at rest on a surface. What is the normal force acting on it?

A. 0 N
B. 50 N
C. 100 N
D. 500 N

Solution

The normal force equals the weight of the object, which is F = mg = 50 kg * 9.8 m/s² = 490 N.

Correct Answer: C — 100 N

Learn More →

Q. A 50 kg object is dropped from a height of 20 m. What is the speed just before it hits the ground? (g = 10 m/s²) (2020)

A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s

Solution

Using v² = u² + 2gh, v² = 0 + 2 * 10 m/s² * 20 m = 400, v = √400 = 20 m/s.

Correct Answer: B — 20 m/s

Learn More →

Q. A 50 kg object is in free fall. What is the net force acting on it?

A. 50 N
B. 100 N
C. 200 N
D. 500 N

Solution

The net force is equal to the weight of the object, F = mg = 50 kg * 9.8 m/s² = 490 N (approximately 500 N).

Correct Answer: B — 100 N

Learn More →

Q. A 50 kg object is moving with a constant velocity. What can be said about the net force acting on it?

A. It is zero
B. It is equal to its weight
C. It is equal to the applied force
D. It is maximum

Solution

If the object is moving with constant velocity, the net force acting on it is zero.

Correct Answer: A — It is zero

Learn More →

Q. A 50 kg object is moving with a velocity of 10 m/s. What is its kinetic energy? (2022)

A. 2500 J
B. 500 J
C. 1000 J
D. 2000 J

Solution

Kinetic energy KE = (1/2)mv² = (1/2)(50)(10²) = 2500 J.

Correct Answer: A — 2500 J

Learn More →

Q. A 50 kg object is moving with a velocity of 10 m/s. What is its momentum?

A. 500 kg m/s
B. 1000 kg m/s
C. 1500 kg m/s
D. 2000 kg m/s

Solution

Momentum = mass × velocity = 50 kg × 10 m/s = 500 kg m/s.

Correct Answer: B — 1000 kg m/s

Learn More →

Q. A 50 kg object is moving with a velocity of 4 m/s. What is its kinetic energy?

A. 100 J
B. 200 J
C. 400 J
D. 800 J

Solution

Kinetic Energy (KE) = 0.5 * m * v² = 0.5 * 50 kg * (4 m/s)² = 400 J.

Correct Answer: C — 400 J

Learn More →

Q. A 50 kg object is moving with a velocity of 5 m/s. What is its momentum? (2023)

A. 100 kg·m/s
B. 150 kg·m/s
C. 200 kg·m/s
D. 250 kg·m/s

Solution

Momentum p = mv = 50 kg * 5 m/s = 250 kg·m/s.

Correct Answer: A — 100 kg·m/s

Learn More →

Q. A 50 kg object is pulled with a force of 200 N. What is its acceleration? (2023)

A. 2 m/s²
B. 3 m/s²
C. 4 m/s²
D. 5 m/s²

Solution

Using F = ma, we find a = F/m = 200 N / 50 kg = 4 m/s².

Correct Answer: D — 5 m/s²

Learn More →

Q. A 50 kg object is pulled with a force of 200 N. What is the acceleration of the object?

A. 2 m/s²
B. 3 m/s²
C. 4 m/s²
D. 5 m/s²

Solution

Using F = ma, we have a = F/m = 200 N / 50 kg = 4 m/s².

Correct Answer: D — 5 m/s²

Learn More →

Q. A 50 kg object is pushed with a force of 200 N over a distance of 10 m. What is the work done? (2000)

A. 2000 J
B. 1000 J
C. 500 J
D. 3000 J

Solution

Work Done = Force * Distance = 200 N * 10 m = 2000 J

Correct Answer: A — 2000 J

Learn More →

Q. A 50 kg object is pushed with a force of 200 N. What is the frictional force if the object moves with constant velocity? (2023)

A. 0 N
B. 50 N
C. 200 N
D. 100 N

Solution

If the object moves with constant velocity, the frictional force equals the applied force, which is 200 N.

Correct Answer: C — 200 N

Learn More →

Q. A 50 kg person jumps off a diving board with a speed of 5 m/s. What is the momentum of the person just before hitting the water?

A. 100 kg·m/s
B. 200 kg·m/s
C. 250 kg·m/s
D. 300 kg·m/s

Solution

Momentum p = mv = 50 kg * 5 m/s = 250 kg·m/s.

Correct Answer: A — 100 kg·m/s

Learn More →

Q. A 500 g block of ice at -10°C is heated until it melts completely and the water is at 0°C. How much heat is required? (Specific heat of ice = 2.1 J/g°C, Latent heat of fusion = 334 J/g) (2000)

A. 1050 J
B. 1340 J
C. 1500 J
D. 2000 J

Solution

Heat to raise ice to 0°C = 500g * 2.1 J/g°C * 10°C = 10500 J. Heat to melt = 500g * 334 J/g = 167000 J. Total = 1050 J + 167000 J = 1340 J.

Correct Answer: B — 1340 J

Learn More →

Q. A 6 kg object is at rest on a horizontal surface. If a horizontal force of 12 N is applied, what is the acceleration assuming no friction?

A. 1 m/s²
B. 2 m/s²
C. 3 m/s²
D. 4 m/s²

Solution

Using F = ma, acceleration a = F/m = 12 N / 6 kg = 2 m/s².

Correct Answer: B — 2 m/s²

Learn More →

Q. A 6 kg object is dropped from a height. What is the force acting on it just before it hits the ground?

A. 6 N
B. 60 N
C. 12 N
D. 0 N

Solution

The force acting on it is its weight, F = mg = 6 kg * 10 m/s² = 60 N.

Correct Answer: B — 60 N

Learn More →

Q. A 6 kg object is in free fall. What is the force acting on it due to gravity?

A. 6 N
B. 60 N
C. 600 N
D. 0 N

Solution

Force due to gravity F = mg = 6 kg * 10 m/s² = 60 N.

Correct Answer: B — 60 N

Learn More →

Showing 331 to 360 of 27365 (913 Pages)

Major Competitive Exams

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