Posts

Class 7 (Science Assignment)

 Solve the following numerical problems on force and motion: 1.      A boy pushes a box with a force of 20 N . What is the force applied? 2.      Two forces of 10 N and 15 N act on an object in the same direction. Find the net force . 3.      Two forces of 30 N and 10 N act on an object in opposite directions. Find the resultant force . 4.      A car travels 120 m in 10 s . Find its speed . 5.      A cyclist covers 600 m in 2 minutes . Find the speed in m/s . 6.      A ball moves at a speed of 5 m/s for 8 s . Find the distance covered . 7.      An object starts from rest and moves with a speed of 10 m/s . What is the change in speed ? 8.      A force of 25 N acts on a body. If another 5 N force opposes it, find the net force . 9.      A toy car moves 50 m in 5 s . Calculate its s...

Class 8 (Science Assignment)

  Solve the following numerical problems on force and motion: 1.      A force of 50 N acts on a body of mass 10 kg . Find the acceleration produced. 2.      A body of mass 5 kg is accelerated at 2 m/s² . Find the force applied . 3.      A car increases its speed from 10 m/s to 30 m/s in 10 s . Find its acceleration . 4.      A body moving with uniform speed covers 200 m in 20 s . Find its speed . 5.      Two forces of 40 N and 25 N act on a body in the same direction. Find the net force . 6.      Two forces of 60 N and 20 N act in opposite directions. Find the resultant force . 7.      A force of 100 N produces an acceleration of 5 m/s² . Find the mass of the body . 8.      A cyclist moves at 5 m/s for 2 minutes . Find the distance covered . 9.      A body initially at rest attains a speed of 2...

Class 9 (Science Assignment)

Solve the following numerical problems on force and motion: 1.      A body of mass 10 kg moves with a velocity of 5 m/s . Find its momentum . 2.      A force of 20 N acts on a 4 kg object. Find the acceleration . 3.      A car of mass 1000 kg accelerates at 2 m/s² . Find the force applied . 4.      A body changes its velocity from 10 m/s to 30 m/s in 5 s . Find the acceleration . 5.      A ball of mass 2 kg moving at 6 m/s is brought to rest in 3 s . Find the retarding force . 6.      A force of 50 N acts on a body for 5 s . Find the change in momentum . 7.      A body of mass 5 kg moving with velocity 4 m/s collides with a wall and rebounds with velocity 2 m/s in the opposite direction. Find the change in momentum . 8.      A car starting from rest attains a speed of 20 m/s in 4 s . Find its acceleratio...