Year 7 - Motion and Forces

Which force is being described: A force that depends on gravity.

• Gravity

• Weight

• Thrust

• Air resistance

Which force is being described: A force that acts upwards in water

• Thrust

• Tension

• Upthrust

• Reaction force

Which of the following is TRUE?

• Your mass never changes, your weight is dependent on gravity

• Your weight never changes, your mass is dependent on gravity

• Your mass or weight never changes

• Your mass and your weight are both dependent on gravity

Fill in the gap... Weight = ________ x gravitational field strength

If the forces acting on an object are balanced the object will...

• accelerate or decelerate

• stay the same speed or stationary

What is the resultant force on an object with 35N forwards and 10N backwards?

• 25N forwards

• 25N backwards

• 45N forwards

• 45N backwards

What is the resultant force acting on a stationary object?

In a free-body diagram, the size of the arrows represents...

• the direction of the force

• the type of force

• the size of the force

• the time the force is happening

At terminal velocity...

• the object is speeding up

• the forces are unbalanced

• the object is slowing down

• all of the forces are balanced

Which of these will experience the highest pressure?

• a swimmer at the surface of the sea

• a diver at the seabed