Question

A car weighing 1000 kg is accelerated to 20 m/s from start in 5s calculate the rate of change of momentum of car

Answer 1

Step-by-step explanation:

At start that start the initial velocity I. e

u = 0

V = 20 metre per second

t = 5S

a = rate of change of momentum I. e

$a = \frac{v - u}{t} \: eq \: 1$

a=

$\frac{20 - 0}{5} = \frac{20}{5} = 4$

Or

initial momentum=mu1000*0

=0

final momentum=mv=1000*20

=20000kgms^-1

rate of change of momentum =

$\frac{mv - mu}{t} = m \times \frac{v - u}{t}$

according to equation 1

=1000*4

4000 is the rate of change of momentum