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Forces In Motion Worksheet
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Forces In Motion Worksheet
Help Sofia, Jamal, and Ravi explain how forces affect a city bus and the objects around it. Read each question carefully. Show your thinking for force calculations and use newtons (N) where needed.
Forces on the Route
A force can change an object's motion or shape. Forces may be balanced or unbalanced.
1.At a bus stop, Sofia pushes a stuck stroller forward. What is a force?
- A push or pull on an object
- The color of an object
- The distance an object travels
- The amount of time an object is moving
2.Jamal is standing on the bus as it begins moving forward. Which statement best describes Newton's First Law?
- An object changes its motion only when an unbalanced force acts on it.
- A moving object always speeds up.
- Every object naturally moves in a circle.
- Gravity acts only on objects that are falling.
3.The bus travels at a steady speed in a straight line. The engine pushes it forward with 2,400 N while air resistance and friction push backward with a total of 2,400 N. Are the forces balanced or unbalanced? What is the net force?
4.At a red light, the bus's brakes create a 900 N force backward while the engine pushes 250 N forward. Calculate the net force and state its direction.
5.A bus mechanic pushes a small luggage cart with 40 N to the right. Ravi pushes it with 15 N to the left. Find the net force and direction.
Motion, Mass, and Newton's Laws
Use the clues in each situation to connect forces with motion.
6.A 1,000 kg bus experiences a net forward force of 2,000 N. Using F = ma, calculate its acceleration.
7.The same net force pushes two carts: Cart A has a mass of 10 kg, and Cart B has a mass of 20 kg. Which cart accelerates more, and why?
8.Complete the statement about Newton's Third Law: When the bus tires push backward on the road, the road pushes the tires .
9.True or false: When Jamal walks forward, his foot pushes backward on the ground, and the ground pushes forward on his foot.
TrueFalse
10.Assume the bus is stationary or moving at a constant speed in a straight line, with no acceleration. A backpack rests on the bus floor and is not sliding. Draw and label the forces acting on the backpack. Include gravity and the floor's support force, use arrows to show their directions, and explain whether the forces are balanced.
11.Explain how Newton's First Law helps explain why a passenger leans forward when a moving bus stops suddenly. Use the word inertia.
3 printable pages
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