Question

Practice Problems : 4
1. A car initially at rest, picks up a velocity of 72 km/h in 20 seconds. If the mass of the car is
1000 kg, calculate: (i) the force developed by its engine, and (ii) the distance covered by the
car in 20 seconds​

Answer 1

Answer:

Force=1000N    Distance=200m

Explanation:

Speed=72km/h=20m/sec

Acceleration=20/20=1m/$sec^{2}$

Force=1000*1=1000N

Distance=1/2a$t^{2}$(2nd equation of motion)

D=200

Hope this will help