A motorcycle is being driven at a speed of 20 m/s when brakes are applied to bring it to rest in five seconds. The deceleration produced in this case will be :

(a) + 4 m/s²
(b) − 4 m/s²
(c) + 0.25 m/s²
(d) −0.25 m/s²

Open in App

Solution

We have,
Initial velocity = 20 m/s
Final velocity = 0 m/s
Time taken = 5 sec.
So,
Deceleration = – Acceleration
= –(0 – 20)/5
= 4 m/s²
So, the answer is
(a) 4 m/s²

Suggest Corrections

Similar questions

A car is being driven at a speed of 20m/sec when brakes are applied to bring it to rest in 5sec. The declaration produced in this case will be??

Answer is -4 m/sec square

Teacher plz explain the evaluation

A van starts from rest, accelerates uniformly and attains a speed of $20 m / s$ in $25$ seconds. What is the acceleration of the van?

10 m/s

20 m/s

4 sec

What is the acceleration of a van that starts from rest and attains a speed of $20 \frac{m}{s}$ in 25 seconds?

Join BYJU'S Learning Program