Question

a car starts from rest and acelerates uniformly over a time of 5.21 seconds for a idstance of 110 metresdetermine the acceleration of a car

Answer 1

Answer:

Explanation:

Answer

The acceleration of the car is

8.1 m/s²

45

28

5.0

Given

A car starts from rest i.e. u = 0

time taken, t = 5.21s

Distance covered,s =110m

To Find

The acceleration of the car.

Formula to be used

• s = ut + (1/2)at²

Solution :

Let us consider the acceleration of the

car be a

So putting the given quantities in the above formula we have

110 = 0×(5.21)+ (1/2)×a×(5.21)²

110 = (1/2)×a×5.21x5.21

⇒a=

= (110×2)/(5.21×5.21)

⇒a= 8.104 m/s²

Thus the required acceleration of the car is 8.1m/s²