Answer:
mass of car, m = 900 kg
initial velocity of car, u = 20 m/s
acceleration of car , a = 2m/s²
we have to find force required to acceleration this car and workdone after time t = 10s.
force = mass × acceleration.
so, force required to acceleration the car , F = 900kg × 2m/s² = 1800 N
workdone = force displacement.
so, we have to find displacement.
using formula, s = ut + 1/2 at²
= 20 × 10 + 1/2 × 2 × (10)²
= 200 + 100
= 300m
so, workdone = 1800 N × 300 m
= 540000 J
= 5.4 × 10^5 J
Explanation:
i hope you understand better
