WorksheetsDynamics
Total questions: 17
Worksheet time: 9mins
Which of the following must be true if an object is accelerating?
It is going really fast.
It is moving away from the frame of reference point.
Balanced forces are acting upon it.
Unbalanced forces are acting upon it.
A student drops a ball onto the floor and it bounces. Which of the following statements about the interaction between the ball and the floor is correct?
The floor applies the same amount of force to the ball that the ball applies to the floor, which causes the ball to bounce.
The floor applies a larger amount of force to the ball than the ball applies to the floor, which causes the ball to bounce.
The floor applies a larger amount of force to the ball than the ball applies to the floor because it is a part of the Earth.
The ball applies a larger amount of force to the floor than the floor applies to the ball because the ball bounces.
Sami wants to build the fastest racing bike possible. What is one way he can change the bike, so she has a better chance of winning the race?
reduce the mass of the bike so it accelerates more quickly
put on smoother tires to eliminate friction with the race track
increase the mass of the bike to increase its gravitational field
replace metal parts with plastic to decreases its magnetic field
The force diagram for an object that is being dragged across the floor is shown to the right. The object is experiencing an acceleration of 2 m/s2 as it moves under the influence of the forces shown. Use the diagram to determine the force of friction acting on the object.
The force of friction is 30 newtons.
The force of friction is 50 newtons.
The force of friction is 20 newtons.
The force of friction is 150 newtons.
What is the net force for an object with a constant velocity of 10 m/s?
Zero
Less than 10 N but greater than 0
Greater than 10 N
10 N
Less than 0 N
After breaking up, Jane slapped John with a force of 15 N. But John did not slap back because he knows that he exerted the same amount of force on Jane. What concept supported the idea of John?
Law of Inertia
Law of Acceleration
Law of Action-Reaction
Law of Gravitation
Conservation of Energy
A body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This statement is known as
Law of Inertia
Law of Acceleration
Law of Interaction
Law of Gravitation
Conservation of Energy
1 Newton of force is equal to
1 kg m/s
1 kg m/s2
1 kg /ms2
1 m/ kg s2
1 s/ kg m
The weight of an object can change when the object enters into a region with stronger or weaker gravity.
True
False
The mass of an object can change when the object enters into a region with stronger or weaker gravity.
True
False
A 60.0-kg sprinter starts a race with an acceleration of 5 m/s2. What is the net external force on him?
30 N
300 N
18 N
180 N
A 20N of force was applied to a 10 kg box. What is its acceleration?
2 m/s2
200 m/s2
10 m/s2
0.2 m/s2
0.5 m/s2
A 50 N of force was exerted by object A (10 kg) on object B (5 kg). How much force was exerted by object B on A based on the action force?
50 N
25 N
100 N
75 N
500 N
While watching Netflix, the laptop was at rest on top of a table. What force(s) is(are) present on the laptop?
None
Normal Force
Normal Force and Gravity
Gravity
Normal Force, Tension, and Gravity
What is The Second Law of Newton?
Inertia
F=ma
F1 = -F2
a = v/t
What are the units of Force
Kilograms (kg)
meters/seconds (m/s)
Joules (J)
Newtons (N)
If object 1 is lighter than object 2 and they are both being pushed by THE SAME amount of force, which of the two will accelerate the most?
The lighter (object 1) because the object's inertia in comparison to the heavier is easier to overcome hence, making object 1 speed up more than object 2.
The heavier (object 2) because the more the inertia the more the object will accelerate
They don't accelerate because they travel at the same rate
They both have the same acceleration because the same amount of force is being exerted on the objects.
