Force & Motion — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A big push moves a ball a farther distance than a small push.
A stronger push gives the ball more energy, so it travels a longer distance before stopping.
2. A gentle tap on a toy car will make it move only a short way.
Weak pushes give little energy, so the car does not travel far before friction stops it.
3. If two kids pull a wagon with more force, it speeds up faster than with one kid.
When pulling forces add up, the wagon accelerates more quickly than with a single pull.
4. A strong wind can push a sailboat faster across the water than a weak breeze.
Bigger pushes from the wind give the boat more speed across the water.
5. The harder you kick a soccer ball, the farther it rolls.
A harder kick transfers more force to the ball, sending it a longer distance.
6. A tiny push on a heavy box might not move the box at all.
Heavy objects need enough force to overcome friction, so tiny pushes may not move them.
7. Bigger forces make objects move bigger changes in speed than small forces do.
The size of a force decides how much the object's speed changes.
8. Pulling a sled with more people adds up to a bigger total force.
When forces point the same way, they add together to make a greater total force.
9. A small push on a ball on smooth ice can still make it travel a long distance.
With almost no friction, even a small force lets the ball glide far across the ice.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Small push on a marble
→ Rolls just a few inches slowly
Rolls a very long distance down a field
Big kick on a soccer ball
→ Rolls a very long distance down a field
Adds forces to pull more quickly
Two kids pulling a wagon
→ Adds forces to pull more quickly
Rolls just a few inches slowly
Gentle tap on a toy car
→ Moves only a short way before stopping
Moves only a short way before stopping
Bigger forces cause bigger changes in motion. Matching actions to results shows how force size decides how far or fast something moves.