Test - Unit 6 Force Concept 3 Flashcards
1
Q
- A baseball player swings his bat and misses the ball but hits a fly that was hovering over home plate. The acceleration of the fly compared to what the acceleration of the ball would have been with the same force applied to it would be…
A
Smaller
Concept 3, p.g. 22
2
Q
- When two forces on the same object are equal and opposite, these forces are called….. forces.
A
Balanced
Concept 3, p.g.20
3
Q
Which if the following best describes how a swimmer moves through the water?
A
The swimmer pushes backwards on the water and the water pushes with an equal but opposite force back on the swimmer.
Concept 3, p.g.23
4
Q
- An object that is falling freely has a constant what?
A
Acceleration
Concept 3, p.g. 23
5
Q
- A student drops a feather and rock at the same time from Mrs. Taylor’s window. If air resistance wasn’t a factor, what should she observe?
A
The rock and feather fall at the same rate.
Concept 3, p.g. 22
6
Q
- In the picture to the right, if the card were quickly pulled off the cup like the arrow suggests, what property would explain why the coin falls into the cup rather than moving with the card?
A
Inertia
Concept 3, p.g.20
7
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
Concept 3, p.g.22
8
Q
- Related to the amount of force needed to change an object’s motion.
A
Momentum
Concept 3, p.g. 23
9
Q
- What does velocity always have ?
A
Direction
10
Q
Bonus : Explain the factors that affect the amount of friction and list the 3 types of friction.
A
The tree types are static friction, sliding friction, rolling friction
The rougher the surface (micro welds)
The greater the force pushing the two objects together the higher the force
Concept 3, p.g. 21
11
Q
- Answer the following questions according to the data table of a skydiver’s motion to the right.
a. What would be the speed of the falling skydiver after 5 seconds?
A
49 m/s
