What Is Force?
A force is a ____ or a ____ that can change how things move.
A push or a pull
When two equal forces act on an object in opposite directions, the forces are called ____.
balanced forces
Increasing the force on an object usually makes it move _____.
faster
The movement of an object is called ____.
Motion
A ramp with a toy car can be used to test this.
If you push a cart with a force of 25 N and your friend pushes with 15 N in the same direction, what is the total force?
40 N
A rope is pulled 120 N left and 120 N right. What is the net force?
0 N (balanced)
A ball rolls 48 meters in 6 seconds. What is its speed?
8 m/s?
Round 68.347 N to the nearest tenth (like recording force data).
68.3 N
A balloon rocket moves 4.5 meters. If you run it 3 times, what’s the total distance?
13.5 meters
A ball moves 12 meters in 3 seconds. What is its speed?
4 m/s?
A rope is pulled 85 N left and 65 N right. What is the net force and direction?
20 N left (unbalanced)
A bike travels 2.4 km each minute. How far does it go in 5 minutes?
2.4 x 5 = 12 km
A toy moves .75 of a meter each push. How far does it move after 6 pushes?
4.5 meters
A ramp experiment measures car speeds: 1.8 m/s, 2.2 m/s, and 2.0 m/s. What is the average speed?
2.0 m/s
Write 3,482.67 in expanded notation. (Think about recording data from a force meter reading.)
3,000 + 400 + 80 + 2 + 0.6 + 0.07?
If a toy car on a ramp accelerates 0.5 m/s each second, how fast is it moving after 8 seconds?
4 m/s?
A car slows from 36 m/s to 24 m/s in 3 seconds. What is the change in speed per second?
4 m/s each second
A pendulum swings forward and back 2.5 meters each cycle. After 10 cycles, how far has it traveled?
25 meters
A toy car travels 12.5 m in 2.5 seconds. What is its speed?
5 m/s
A tugboat pulls with 52.6 N of force, and another with 47.4 N of force. What is the combined force, written in decimal addition?
100.0 N?
Write and solve an equation: A seesaw has 2 children on one side weighing 35 kg each. How many kilograms must sit on the other side to balance it?
35 × 2 = 70
A spaceship travels at 7.5 km/s. How far will it travel in 200 seconds?
1,500 km.
Speed is distance ÷ time. A runner covers 1.2 km in 0.2 hours. What is the speed?
6 km/hour
A roller coaster car weighs 250 kg. If gravity pulls with 9.8 N/kg, what is the total force of gravity?
250 x 9.8 = 2,450