Physics- Hooke's Law, Forces, Moments and speed

Speed is a _____ quantity.

A spy is on top of a train and is running towards the back of it at a speed of 5m/s, while the train is moving

at a speed of 45m/s. What is the man's speed relative to the train?

• 40m/s

• 50mph

• 50m/s

• -40m/s

A car moves 20km in 10 minutes. What is its speed?

• 80km/h

• 20 km/h

• 20km/s

• 80km/min

Velocity is a _____ unit while distance is a _____ unit.

What is the formula for speed?

• Speed = Displacement/time

• Speed =

  time/distance

• Speed=

  distance/time

• Speed =

  distance/velocity

Choose the non-contact forces

• Magnetism

• Electrostatic force

• Gravity

• Friction

What is unit is used to measure force?

• Joules

• Newton

• Ohm

What is sum of all forces on an object called?

• Full force

• Resultant force

• Resulted force

• Complete Force

Johnpulls a toy towards the right with a force of 50N, while Jamie pulls to the left with a force of 48N. What is the resultant fore?

• 98N to the right

• 2N to the right

• 2N towards the right

• It stays st same position

Calculate the resultant force

• 50N to the left

• 60N to the left

• 190N

• 50N upwards