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WorksheetsUnit 4. Forces and motion
Total questions: 20
Worksheet time: 20mins
When a ball is thrown into the air, which force causes the ball to fall back to the Earth?
Gravity pulls the ball back to the Earth.
Friction pulls the ball back to the Earth.
Magnetic force pushes the ball back to the Earth.
Atmospheric pressure pushes the ball back to the Earth.
Multiple forces, such as gravity and friction, act on a soccer ball when it rolls across a field. Which statement best describes how friction affects the motion of the soccer ball?
Friction causes the ball to bounce.
Friction causes the ball to increase in speed
Friction causes the ball to decrease in speed
Friction causes the ball to roll forward and then backward
Students are experimenting with a toy car on a smooth, wooden ramp. They apply force to the back of the car to push it down the ramp. The students measure how fast the car rolls down the ramp. If the students want to increase the speed of the car down the ramp, what should they do?
decrease the angle of the ramp
decrease the height of the ramp
increase the force applied to the car
increase the friction between the car and the ramp
Which picture best shows an animal overcoming the force of gravity?
Which of the following is a unit of measurement for force?
Liters
Kilograms
Newtons
Meters
A student sets a block at the top of a wooden ramp. The student pushes the block. As the block slides down the ramp, it slows down and then comes to a stop. What force causes the block to slow down?
the force of gravity
the force of friction
the force of magnetism
the force of the student's push
If the net force is zero, the object will
change its motion
stay same
Which statement is a correct explanation for balanced forces acting on an object?
The speed of the object decreases.
The direction of the object changes.
The speed of the object increases.
The motion of the object stays the same.
Weight is _________.
the quantity of matter in an object.
the measure of an object's inertia.
the force exerted by gravity on an object's mass.
equal to the mass of an object.
Which two of these forces act on parachutes?
Air Resistance
Gravity
Thrust
Kinetic Energy
What causes an object to fall faster?
Smaller surface area
Larger surface area
If it has a parachute
If it is softer
Another name for air resistance is...
Buoyancy
Streamline
Gravity
Drag
Air resistance pushes against falling
objects and __________________.
Speeds them up
Keeps them afloat
Slows them down
Spins them
Which has more air resistance?
When dropped from the same distance, which will fall to the floor faster?
