If a car accelerates from rest to a speed of 20 m/s in 5 seconds, what is its ac

₹0.0

Question: If a car accelerates from rest to a speed of 20 m/s in 5 seconds, what is its acceleration?

Options:

Correct Answer: 2 m/s²

Solution:

Acceleration is calculated using the formula a = (v - u)/t. Here, a = (20 m/s - 0)/5 s = 4 m/s².

If a car accelerates from rest to a speed of 20 m/s in 5 seconds, what is its acceleration?

If a car accelerates from rest to a speed of 20 m/s in 5 seconds, what is its acceleration?

Step 1: Identify the initial speed (u) of the car. Since the car starts from rest, u = 0 m/s.
Step 2: Identify the final speed (v) of the car. The final speed is given as v = 20 m/s.
Step 3: Identify the time (t) it takes to reach the final speed. The time is given as t = 5 seconds.
Step 4: Use the formula for acceleration, which is a = (v - u) / t.
Step 5: Substitute the values into the formula: a = (20 m/s - 0 m/s) / 5 s.
Step 6: Calculate the acceleration: a = 20 m/s / 5 s = 4 m/s².

Acceleration – Acceleration is the rate of change of velocity over time, calculated using the formula a = (v - u)/t, where v is final velocity, u is initial velocity, and t is time.