Year 11 Science: Speed, Acceleration and Forces

What is the unit of force called?

• The newton, N

• The newton, n

• The neutron, N

• The neutron, n

The arrows in this diagram represent the sizes of forces acting on a stationary tennis ball. What will happen to the tennis ball?

• It will stay still

• It will start to move upwards

• It will start to move downwards

• It will start to move to the left

When an object is at rest/stationary…

• There are no forces acting on it

• There are forces acting on it but these forces are balanced

• There is just one force acting on it, gravity

• There are more than one forces acting on it

Which of these is not a force?

• Friction

• Weight

• Height

• Twist

What does the area under a speed/time graph calculate?

• Speed

• Acceleration

• Distance

• Time

What is the gradient of a distance/time graph?

• Distance

• Speed

• Time

• Acceleration

What does a horizontal line on a speed-time graph mean?

• Constant speed

• Constant acceleration

• Constant time

• Constant distance

Acceleration is....

• A faster time

• Longer distance

• A change in speed

• A louder noise

What is the net force?

• 20 N

• 0 N

• 40 N to the right

• 40 N to the left

Which example would be a balanced force?

• Train moving at a constant speed in the same direction

• A skier going down a hill

• A basketball being passed to a teammate

• An apple falling to the floor