Test - Forces Flashcards
1
Q
- What is the net force of a block that is pushing 3N to the left and 5N to the right?
A
2N left
Nb. Pg 28
2
Q
- What fact is not correct about weight?
A
Is a constant no matter where you are located
Nb. Pg 27
3
Q
- The size of the gravitational force between two objects depends on their
A
Masses and the distance between them
NB. Pg 28
4
Q
- Compared to the inertia of a 2.0 kg ball, the inertia of a 4.0 kg ball is..
A
Twice as great
Nb. Pg 29
5
Q
- An object falling freely has a constant of what?
A
Acceleration
NB pg. 26
6
Q
- Consider a watermelon that starts from rest and is dropped straight down from a tall building. Air resistance can be ignored. What is false about the watermelon?
A
The watermelon falls with a constant velocity
Pg. 30
7
Q
- What is the weight of the that is 25kg and has 300N acting on it?
A
245N
NB. Pg 28
8
Q
- The relationship among mass, force, and acceleration is explained by
A
Newton’s second law
PG. 25
9
Q
- When two forces on the same object are equal and opposite, these forces are called
A
Balanced forces
Nb. Pg 28
10
Q
- Tendency for an object to resist change in motion
A
Inertia
Nb. Pg 25
11
Q
- A net force acting on an object causes the object to accelerate in the direction of the net force.
A
Newton’s 2nd law
NB pg. 27
12
Q
- A tennis ball has less mass than a bowling ball making it harder to throw at the same speed. Which law shows this?
A
2nd law
Nb Pg. 27
13
Q
- What is the unit for momentum?
A
KG.m/s
Nb. Pg 33
