WorksheetsForces
Total questions: 15
Worksheet time: 17mins
The person in the picture wants the crate to move to the right at 4.0 m/s. A friction force of 9.0 N to the left is acting on the crate as it slides. The person needs to pull to the right with a force of ---.
4.0 N
9.0 N
13.0 N
anything more than 9.0 N
According to the free-body diagram of the engine block being dragged across the floor, this engine block is ---.
moving to the right
not moving
accelerating to the right
cannot say without more information
What is happening to the rocket in the picture?
It is being accelerated down
It is moving down
It is moving up
It is being accelerated up
Select ALL of the items below which could be represented by the arrow shown above for a car moving in a circular path as seen from above.
centripetal force
linear velocity (a.k.a. tangential velocity)
angular velocity
centripetal acceleration
A car with mass m travels around a curve with velocity v. What do you know about the centripetal force if the speed triples?
Nothing
The centripetal force triples
the centripetal force multiplies by 9
The centripetal force divides by 3
A dolphin swims in a circle with a radius of 30 m and moves with a speed of 3.2 m/s. What is the dolphin’s centripetal acceleration?
0.341 m/s²
0.106 m/s²
96 m/s²
307.2 m/s²
A carnival ride is being designed to move a ride vehicle in a circle at a particular speed. If the design is changed so that the radius is one-third as big, and the speed is one-half as much, the new acceleration will be --- times the original design acceleration.
3/2
2/3
3/4
4/3
The direction of the net force on an object moving in a circular path is ---.
outward, because that's the direction it feels like it's being pulled
forward, because that's the direction of the velocity
inward, because that's which way it gets pulled to keep it from flying off in a tangent line path
forward, because that's the direction of the acceleration
Two massive bodies are pulling on each other with gravity with a force of 12.0 µN. If one object is replaced with another object six times as massive, and the distance is changed to four times the original distance, the new force will be ---.
4.5 µN
18.0 µN
288 µN
0.375 µN
Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?
9 N
18 N
72 N
144 N
In which direction is the net force when the rollercoaster is at the top of the loop?
Towards the sky
Towards the right
Towards the left
Towards the ground
A car making a corner is pulling 2 g's (i.e. an acceleration of 2×9.8 m/s², for a total acceleration of 19.6 m/s²). If the car is moving at a speed of 28 m/s, the curve has a radius of ---.
2.9 m
1.4 m
40 m
104 m
A bowling ball is moving in a vertical circle, about to be sent down the bowling lane, as shown in the diagram. Which of the following depict the velocity of the bowling ball?
A
B
C
D
The forces between the masses in the original picture above is 22.5 nN. If the mass on the right is replaced with something four times as massive, and they are rearranged so they are three times farther apart, the force is now ---.
10.0 nN
30.0 nN
50.6 nN
90 nN
