Question

Numerical - ( to solve )
1) A force of 40 N act on a body of mass 10 kg. find acceleration produced.
2) Calculate force required to impart a car a velocity 30 m/s in 10 s after a stan (
mass of car - 1500 kg. ).
3) A car is moving with velocity of 108 km/hr. and it takes 4 s. to stop after brakes
are applied . find force exerted by brakes if mass of car is 1000 kg,
4) What force would be needed to produce an acceleration of 4 m/s on a ball of
mass 6 kg.
5) For how long should a force of 100 N act on a body of mass 20 kg. so that it
acquires a velocity of 100 m/s from rest.
6) A force of 5 N gives a body an acceleration of 8 m/s2 and 2nd body an
acceleration of 24 m/s2. What acceleration would it give if both masses are tied
together.
7) A truck starts from rest and rolls down a hill with uniform acceleration and it
covers 400 m in 20 s. find force acting on truck if its mass is 7 metric tons.
8) A motorcycle is moving with a velocity of 90 km / hr. and it takes 5 s to stop after
the brakes are applied.
a) Calculate the force exerted by brakes on motorcycle if its mass is 200 kg.
b) Find the distance covered by motorcycle in this duration.
9) A 150 g ball travelling at 30 m/s strikes the palm of player's hand and it is
stopped in 0.06 s. find force exerted by ball on the hand.
10) A 1000 kg vehicle moving with velocity 20 m/s and is brought to rest in a distance
of 50m.
a) Find the acceleration.
b) Calculate unbalanced force acting on vehicle.
11) A body of mass 5 kg. is moving with velocity 10 m/s and is acted upon by force
of 20 N. find its velocity after 1 sec.​

Answer 1

Answer:

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