Physics Week 1 Question Preview (ID: 58744)
Review Of Work On Types Of Forces And Newtons First And Second Laws.
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Scalar quantities have
a) Magnitude only
b) direction only
c) magnitude and direction
d) neither magnitude or direction
Vector quantities have
a) Magnitude only
b) direction only
c) magnitude and direction
d) neither magnitude or direction
Which term means the distance an object is away from the starting point (in a particular direction)
a) displacement
b) direction
c) scalar
d) vector
A runner travels from the start of a track (0m) to 15m. He then turns around and runs back to the start. What is his displacement?
a) 0m
b) 15m
c) 30m
d) 0km
A cyclist travels 10km from his home. He then drives 3.5km back along the same road to his favourite cafe for lunch. What distance has he travelled?
a) 13.5km
b) 10km
c) 6.5km
d) 3.5km
2 dogs are pulling the same rope in opposite directions. Dog 1 pulls the rope with a force of 15N to the left, and Dog 2 pulls the rope 23N to the right. What is the NET FORCE on the rope?
a) 8N to the right
b) 23N to the right
c) 8N to the left
d) 38N to the right
2 tug of war teams are pulling on the same rope. If the right team wins by pulling over the left team, which of the following statements is correct?
a) the net force on the rope is to the right
b) the net force is 0 (the left and right forces are balanced)
c) the net force is to the left
d) the left team must be stronger than the right team
What term means 'an object will keep moving in the same direction until another force or object slows it down'?
a) inertia
b) gravity
c) friction
d) acceleration
When a racing car approaches a bend, the driver will press on the brake. Which of the following statements explains why the car will slow down?
a) the friction force on the wheels gets bigger than the thrust
b) the force on the car become balanced
c) the thrust becomes bigger than the friction force on the wheels
d) there is too much air resistance on the car
What happens to the speed of a motorbike if the drag and thrust forces are balanced?
a) it travels at a constant speed
b) it slows down
c) it speeds up
d) it stops moving
It would be very difficult to drive a car on Jupiter - can you suggest why?
a) The force of gravity is too strong
b) There is not enough gravity
c) The atmosphere is very thick
d) The planet surface is completely flooded
It would be very difficult to drive a car on the Moon. Why?
a) There is not enough gravity
b) There is too much gravity
c) The ground is very soft
d) It is far to hot so the tyres would melt
Which of these is a SCALAR quantity?
a) distance
b) displacement
c) force
d) momentum
Which of these is a VECTOR quantity?
a) displacement
b) mass
c) distance
d) speed
Which of the following forces is a 'driving' force?
a) thrust
b) drag
c) gravity
d) air resistance
Which of the following is a 'resistive' force?
a) air resistance
b) gravity
c) thrust
d) magnetism
If the forces on an object are balanced (equal) what is the net force on the object?
a) 0N
b) 10N
c) 25N
d) There is no way to tell
Why are women more likely to be injured in a car accident?
a) seatbelts are designed using male crash test dummies
b) women are weaker than men
c) women are less likely to be driving than men
d) women drive faster than men on average
What term describes a car that is speeding up?
a) accelerating
b) decelerating
c) burn out
d) stationary
Which force did Sir Isaac Newton name?
a) gravity
b) friction
c) air resistance
d) magnetism
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