Force and Motion 1
Contact or Non-Contact
Force and Motion 3
Force and Motion 4
Force and Motion 5
100
What is a PUSH or PULL on an object?
Force
100
CONTACT or NON-CONTACT FORCE?
A boy using his foot to kick a soccer ball.
A. Contact
B. Non-Contact
B. CONTACT FORCE
100
The force that acts directly against the direction of motion.
What is friction?
100
A golf ball rolls down a hill on the golf course. Which statement best describes how friction affects the motion of the golf ball?
A. Friction causes the golf ball to roll forwards and backwards.
B. Friction decreases how far the ball rolls.
C. Friction increases how fast the ball rolls.
D. Friction causes the ball to bounce.
B. Friction decreases how far the ball rolls.
100
A 20 N force is applied to a 10 kg block to move it left across the floor. The frictional force opposing the motion is 5 N. Draw a free body diagram showing all forces and calculate the net force acting on the block
(Student needed to have drawn FBD) Net force is 15N left.
200
If these boys are each pulling with the force of 10 newtons. What will happen?
The boy in blue will win.
They will not move at all.
The boy in red will win.
They will not move at all. Balanced force is being applied.
200
CONTACT or NON-CONTACT FORCE
Leaves falling from tree branches to the ground.
A. Contact
B. Non-Contact
B. Non-Contact
200
Megan was having a summer party at her house. This year she got a slip n' slide- which was a big hit. All day her and her friends where seeing how fast they could slide across it. What type of force is in action when playing on a slip n' slide?
What is friction
200
There are two shopping carts in the parking lot. Cart 1 has a mass of 10kg. Cart 2 has a mass of 12kg. All of a sudden the wind picks up and blows the carts in the same direction and speed. Both carts hit Mr. Williams car. Which cart caused the least amount of damage?
What is Cart 1.
200
A person pulls a 15 kg sled with a force of 50 N up a hill. If friction between the sled and the ground is 23 N, draw a free body diagram and calculate the net force acting on the sled.
(Student draws FBD) Answer: 27 N up the hill
300
Which of the following statements is true?
Balanced forces cause a change in position.
Unbalanced forces cause a change in position.
Forces do not affect position.
Unbalanced forces cause a change in position.
300
CONTACT FORCE or NON-CONTACT FORCE:
Using your fingers to play the piano.
A. Contact Force
B. Non-Contact Force
A. Contact Force
300
A soccer ball is at rest on the ground. When a force is applied to it, it moves. If larger force is applied to it, how will the motion of the soccer ball change?
A. The ball will move slower.
B. The ball will move farther and faster.
C. The ball will come to a stop.
B. The ball will move farther and faster.
300
Hockey is a sport in which players use hockey sticks to push a puck across smooth ice. At practice one day, three different-colored hockey pucks were sliding on the ice. The green hockey puck has less mass than the black and purple hockey pucks, which have the same mass. A player hit each hockey puck with a stick, but not from the same direction. The green puck increases by 10 m/s. The black puck decreases by 10 m/s, and the purple puck decreases by 12 m/s. Which puck(s) experienced the strongest force when hit?
What is the purple puck.
300
A 50 kg object is being lifted vertically upward by a rope with a tension force of 600 N. The gravitational force acting on the object is 490 N. What is the net force acting on the object.
What is 110 N upwards.
400
What type of force requires an object being suspended in fluid?
What is buoyancy.
400
CONTACT OR NON-CONTACT FORCE?
The magnetic needle of a compass always points north.
A. Contact Force
B. Non-Contact Force
B. Non-Contact
400
You get into trouble, your guardian grounds you and tells you to go to bed early. As you're laying in bed, you randomly think," hey this is __________ force".
What is Normal force
400
What is the net force acting on a stationary object when the forces acting on it are balanced?
What is Zero Newtons
400
Two people are pushing shopping carts of different masses. Sarah pushes a 20 kg cart with a force of 40 N to the right, while Jake pushes a 30 kg cart with a force of 45 N to the right. Both carts experience a frictional force of 10 N to the left. Which cart experiences a greater net force, and by how much?
What is Jakes cart by 5N right
500
Fill in the blank: Force can...
1. Keep an object at _est (not move).
2. Make an object __ove.
3. Change the object's ___irection.
4. Slow down or ___top the moving object.
1. Keep an object at rest (not move).
2. Make an object move.
3. Change the object's direction.
4. Slow down or stop the moving object.
500
Contact or Non-Contact Force
she makes her bicycle move by pushing her feet on the peddles.
CONTACT FORCE
500
Aiden just got hired as a dog walker. At first he only walked two dogs at a time. Now he is walking 8 dogs at once. He feels the force of the dogs pulling on him as he walks down the street. What is the MAIN force taking place as Aiden is walking the dogs?
What is tension force.
500
If there is a force pushing to the right with 45 N and a force pushing to the left with 75 N. What is the net force?
What is 30 N to the left
500
A 5 kg ball is kicked with a force of 100 N, and friction applies a force of 20 N in the opposite direction. At the same time, a 10 kg ball is kicked with a force of 150 N, and friction applies a force of 30 N in the opposite direction. Which ball experiences a greater net force?
What is Ball B experiences the greater net force 120N forward compared to 80 N forward.
600
What non-contact force pulls a ball back to earth?
Gravity
600
Name the Contact Force & Non-Contact Force in the scenario.
A girl throws a baseball into the air. The ball falls to the ground.
Contact Force: girl throws the ball
Non-contact force: ball falls to the ground (gravity)
600
Name 2 forces that are in the following scenario. Annabel is trying to become a pro skater. The first hour she practiced she slid across some gravel and fell down. After that she took off her skates and threw them across the skating area. Maybe skating wasn't in her future.
1. friction
2. applied force
600
A car with a mass of 1,200 kg experiences a forward driving force of 4,000 N, while the friction and air resistance together provide a force of 1,200 N in the opposite direction. Calculate the net force of the car.
What is 2,800N forward.
600
What always changes when an object is in motion?
a. its direction
b. its speed
c. its mass
d. its position
D. Its position