LHTB Physics Pre-Exam (2.3 Mechanics – Kinetics)

For a car weighing 1000 N, what force would be required to accelerate the car to 3 ms-2...

• 3000 N

• 3270 N

• 305.8 N

A time period of 10 microseconds is equal to a frequency of...

• 100kHz

• 10kHz

• 1mHz

The SI unit of acceleration is the…

• metre per second squared (m/s2)

• square metre (m2)

• metre per second (m/s)

If a body starts at rest and reaches 84 m/s in 3 seconds, its acceleration is…

• 28m/s^2

• 14m/s^2

• 252m/s^

The SI unit of velocity is the…

• metre per second (m/s)

• metre (m)

• metre per second squared (m/s2)

An aircraft flies 1350 nmiles in 2h 15mins. What is the average speed?

• 600nmiles/h

• 600miles/h

• 150nmiles/h

A spring extends 7 cm to the ground and back again 20 times a minute. What is the period?

• 3s

• 7cm

• 1/3 cycle

A cyclist goes from rest to 50 m/s in 5 seconds. What is the average acceleration?

• 10m/s^2

• 8m/s^2

• 12m/s^

What is the period of a frequency of 4 Hz?

• 8 seconds

• 4 seconds

• 0.25 seconds

A dot rotates around the circumference of a circle. If the vertical position of this dot is plotted on a graph with respect to time the result will be…

• a sinusoidal waveform

• a transverse waveform

• a linear motion