Question

7.) A car starts from rest and accelerates
uniformly at 1.7 m/s/s. How long will it
take the car to reach a speed of 34 m/s?
A 200 s
B 58 s
C 20 s
D2 s

Answer 1

It will take 20 seconds for the car to attain a speed of 34 m/s

Explanation:

• Acceleration of an object is given by a = velocity/time.
• Here, acceleration of the car = 1.7 m/s² and velocity = 34 m/s. Using these, find time.
• Time =  velocity/acceleration

                 = 34/1.7 = 20 s

So it takes 20 seconds to attain a speed of 34 m/s