Question

example of body with negative acceleration

Answer 1

Answer:

→A car is moving with high velocity (say v1 = 100km/hr toward North) suddenly it's driver notices a dog crossing the road, applies the brake and reduces the velocity of car to zero(v2 = 0) in 10 seconds (t2 - t1 = 10). So v2 -v1 is negative, implies negative acceleration.A ball thrown up in sky with high velocity(say v1 = 10m/s) reach certain height, then stats falling back and reaches the starting point again with same speed but in opposite direction, (so velocity v2 = -10m/s). Here also v2 - v1 is negative, so negative acceleration.