WorksheetsSP9 (and a little bit of SP8)
Total questions: 28
Worksheet time: 30mins
Name one type of force which acts at a distance.
(a)
Which of the following are contact forces? Tick all that apply.
Upthrust
Push
Pull
Friction
Quantities can be scalars or vectors. What extra information do we need to know about vectors?
Magnitude
Distance
Displacement
Direction
Which of the following quantities are scalars? Tick all that apply.
displacement
speed
energy
force
Which of the following quantities are vectors? Tick all that apply.
momentum
distance
mass
acceleration
The picture shows a free body force diagram for a cat. Which arrow represents the normal contact force from the ground?
A
B
C
D
Above is a free body force diagram for a plane. What is the name of the force labelled X?
Friction
Upthrust
Lift
Air resistance
What is the magnitude of the resultant force in the diagram? (a) N
What is the magnitude of the resultant force in the diagram? (a) N
What is the angle between the resultant of the two forces shown and the horizontal? (you may find that drawing a scale diagram helps) (a) degrees
What is the magnitude of the resultant of these two forces? (you will find that drawing a scale diagram helps) (a) N
A plane takes off at an angle of 30 degrees to the runway with a thrust of 200kN, as shown in the diagram. What is the horizontal component of the thrust? (you might find it useful to draw a scale diagram) (a) kN
A plane takes off at an angle of 30 degrees to the runway with a thrust of 200kN, as shown in the diagram. What is the vertical component of the thrust? (you might find it useful to draw a scale diagram) (a) kN
A moment is a measure of the (a) effect of a force?
What is the equation to calculate a moment?
Moment = force x distance
Moment = force x distance normal to the direction of the force
Moment = force x distance moved in the direction of the force
Moment = force / distance
The beam in the diagram is in equilibrium. What is the weight, W, of the box? (a) N
Joe weighs 600 N and sits 1.5 m from the centre of a see-saw. Sally has a weight of 400 N.
Calculate how far she must sit from the centre of the see-saw to balance Joe. (a) m
The beam in the diagram is balanced. What is the weight, W? (assume the beam itself has no weight) (a) N
Three gears are linked as shown in the diagram. If Gear A turns clockwise, which direction does Gear C turn?
Clockwise
Anti-clockwise
Gear A has 10 teeth and Gear B has 15 teeth (do not count the teeth in the diagram!).
If Gear A turns 3 times, how many times will Gear B turn?
5
3
4
2
Which of the gears shown in the diagram will turn the fastest?
Gear A
Gear B
Gear C
Which of the gears shown in the diagram will produce the biggest moment?
Gear A
Gear B
Gear C
Why do we use levers?
To move something heavy with a smaller force
So that a bigger force can be used to move an object
So that light objects can be moved easily
A spanner is used to undo a nut. If the nut is tight, what can be done? Tick all that apply.
Use a smaller force
Use a longer spanner
Use a shorter spanner
Use a bigger force
A light bulb transfers a total of 3600 J of energy in one minute.
2340 J of energy is wasted in one minute.
Calculate the efficiency of the light bulb.
(a)
What are the units of power? Tick all that apply.
J
J/s
W
N
A ball of mass 200 g rolls along the floor.
The speed of the ball is 4 m/s.
Calculate the kinetic energy of the ball.
3.2 J
3200 J
0.64 J
1.6 J
What is the work done pulling the skier up the slope?
11,900 N
7,500 N
35,000 N
2,550 N
