Question

A strongman applies a constant force of 2000 N to a car of mass 1000 kg, which is initially at rest. (a) What is the acceleration of the car? (b) How far does the car move in 5 s?

Answer 1

Answer:

(a) Acceleration $a=2m/sec^2$

(b) Distance s = 25 m

Explanation:

We have given constant force F = 2000 N

Mass of the car = 1000 kg

(a) From newton's law we know that F = ma

So $2000=1000\times a$

$a=2m/sec^2$

(b) Tine is given as t = 5 sec

As the car is initially at rest so initial velocity u = 0 m/sec

From second equation of motion $s=ut+\frac{1}{2}at^2$

So $s=0\times 5+\frac{1}{2}\times 2\times 5^2=25m$