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...