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Worksheetsphys
Total questions: 25
Worksheet time: 26mins
Weight is measured in...
kgs
Newtons
Litres
Kms
Calculate the weight of 250g mass
2500N
2500g
2.5N
2.5kg
What object has the most inertia?
A truck, because it has the most mass
a car, because it has more mass than the bike and skate board.
a bike, because it has more mass than the skateboard.
a skate board, because it had the least amount of mass.
Which surface would have the most amount of friction?
A road
Carpet
An ice skating ring
Treadmill
After the 60 seconds, the parachutist pulls the cord and opens her parachute.
Explain how the parachute reduces the speed of the parachutist when it is just opened.
The friction force decreases
The weight force decreases
The weight force increases
The friction force increases
An object travelling at terminal velocity moves at a steady speed.
True
False
How much force is needed to accelerate a 3kg skateboard at 5m/s2
12N
1.2N
1.5N
15N
55 kgm/s
100 kgm/s
250 kgm/s
500 kgm/s
Which object has the greatest momentum?
A 0.5 kg object rolling at 1m/s.
A 0.15 kg object rolling at 4 m/s.
A 0.2 kg object rolling at 3 m/s
A 0.4 kg object rolling at 2 m/s.
. A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s. What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?
1 N
40 N
25 N
5 N
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.
1 N·s
6 N·s
None of these
66 N·s
A bicycle has a momentum of 24 kgm/s. What momentum would the bicycle have if it had twice the mass and was moving at the same speed?
4x the momentum; 96 kg*m/s
twice the momentum; 48 kg*m/s
1/2 the momentum; 12 kg*m/s
1/4 the momentum; 6 kg*m/s
50N to the left.
150N to the left.
150N to the right.
50N to the right.
A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?
450 N
350 N
4.5 N
200 N
Assuming the system is in equilibrium, calculate the missing distance d
3.4 m
2.8 m
4.4 m
1.6 m
What is one way you might increase the stability of an object?
Lower the center of gravity
Raise the center of gravity
Increase the height of the object
Shorten the base of the object
40 N/cm2
100 N/cm2
400 N/cm2
10 N/cm2
What is pressure of sea water get by the diver in point A?
102 kPa
10.2 kPa
102 Pa
10200 Pa
A spring has a spring constant of 450 N/m. How far is the spring compressed if 150 N of force are used?
2.2 m
3m
5.0 m
0.3 m
How much force is needed to pull a spring with a spring constant of 20 N/m a distance of 25 cm?
10N
20N
15N
5N
If spring constant of a spring is 6N/m and the force it experiences is 72N. How much did the spring extend by?
432m
0.08m
12m
12N
Limit of proportionality
Elastic deformation
Plastic deformation
Acceleration
What is the general relationship between the mass applied and the extension on the spring?
(1) a direct relationship: as mass increases, the extension of the spring increases
(2) an indirect relationship: as mass increases, the extension of the spring decreases
(3) constant relationship: as mass increases, the extension of the spring stays the same
(4) no relationship: there is no relationship between the mass and the extension of the spring
