11B5 Forces end of unit

A wheelchair moves at a constant speed of 2.4 m/s for 4.5 seconds. Calculate the distance moved by the wheelchair

Mathematical Equivalence

ON

Answer explanation

distance = speed x time

(on your equation sheet for GCSE)

Where is the wheelchair travelling fastest?

• A

• B

• C

• D

Where has the wheelchair stopped?

• A

• B

• C

• D

How should I work out the acceleration from this graph?

• Read it off the y axis

• Calculate the gradient

• Read it off the x axis

• Find the area under the graph

What best describes the acceleration and velocity of the wheelchair during the journey

• The wheelchair accelerates constantly before slowing down and stopping

• The wheelchair accelerates constantly before slowing down the acceleration and continuing at a constant velocity

• I have no idea

The wheelchair starts from rest. It accelerates at a constant rate until it has a speed of 1.5 m/s The wheelchair travels a distance of 2.0 m while it is accelerating. Calculate the acceleration of the wheelchair

Acceleration = change in velocity/time

v² – u² = 2 a s

Mathematical Equivalence

ON

Why is it better to use light gates rather than a stopwatch and ruler?

What's the relationship between mass and acceleration

• Mass is proportional to acceleration

• Mass is not related to acceleration

• Mass is indirectly proportional to acceleration

F = ke

Force = mass x 10 but how do I measure e?

• AB

• AC

• BC

What is the spring constant in N/cm?

• 5/11.5 = 0.43

• 11.5/5 = 2.3

• 6/15 = 0.4

• 6.2/20 = 0.31