VELOCITY AND ACCELERATION YR12 IAS EDEXCEL

Which row of the table gives expressions for the magnitude and angle of the student’s resultant velocity?

• A

• B

• C

• D

A pilot is landing a small aircraft. The air strip is only 450 m long and the aircraft decelerates from 40 m s at a constantrateof2m s . Determine if the plane will stop before it reaches the end of the runway

Answer explanation

Theplanestops after400 m,which is 50 m beforetheendoftherunway

A rocket is launched vertically, using motors which give it a constant vertical acceleration of 6.5 m s for30 s before switching off.

At the point when the motors switch off Calculate

a) The velocity of the rocket

b) The height of the rocket above the launchpad

Answer explanation

Thefinal velocity, v, at30 s is 200 m s

Which row in the table gives a quantity plotted on they‐axis and the corresponding quantity represented by the gradient of the graph?

• A

• B

• C

• D

Answer explanation

B

Which of the following expressions gives the magnitude of the velocity in m s –1?

• A

• B

• C

• D

Answer explanation

Which of the following triangles is correct?

• A

• B

• C

• D

Answer explanation