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Q 1/39
Score 0
A football field is about 100 m long. If it takes a person 20 seconds to run its length, how fast (what speed) were they running?
30
50 m/sec
200 m/sec
0.2 m/sec
5 m/sec
Q 2/39
Score 0
An object at rest will _______ if no outside forces are applied.
30
Decrease Mass
Change Velocity
Go to sleep
Stay at rest
39 questions
Q.
A football field is about 100 m long. If it takes a person 20 seconds to run its length, how fast (what speed) were they running?
1
30 sec
Q.
An object at rest will _______ if no outside forces are applied.
2
30 sec
Q.
The units for force are...
3
30 sec
Q.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will ..
4
30 sec
Q.
Dividing the total distance traveled by the total time is how to calculate
5
30 sec
Q.
Acceleration is caused by a force acting on a mass.
6
30 sec
Q.
For a force on an object there is an equal and opposite force.
7
30 sec
Q.
Without any force to change it, an object at rest stays at rest and an object in motion stays in motion
8
30 sec
Q.
If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration? (F=ma)
9
30 sec
Q.
A person in car slides to the right when going through a very sharp left turn on the highway.
10
30 sec
Q.
Which law explains when a magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
11
30 sec
Q.
It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box in Joules?
12
30 sec
Q.
Two factors that determine work are...
13
30 sec
Q.
Units for work are
14
30 sec
Q.
Work transfers
15
30 sec
Q.
Work done = Force x blank?
16
30 sec
Q.
If you do 40 joules of work lifting a 10N box, how high is the shelf you move it to.
17
30 sec
Q.
Mrs. Klenda holds a desk perfectly still above her head. If she holds the desk at a height of 0.5 meters above her head, and applies 68 Newtons of force to do so, how much work has she done?
18
30 sec
Q.
What is speed?
19
30 sec
Q.
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
20
30 sec
Q.
What two measurements are necessary for calculating speed?
21
30 sec
Q.
A snail can move 0.30 meters per minute. How many meters can the snail cover in 15 minutes?
22
30 sec
Q.
What is the force that causes a book to fall to the ground after it is released from your hand?
23
30 sec
Q.
A door knob and bicycle wheel are examples of a ________
24
30 sec
Q.
What is an example of a wedge?
25
30 sec
Q.
An example of the science word-----WORK is
26
30 sec
Q.
Which requires the GREATEST amount of force to move?
27
30 sec
Q.
A device that makes work easier by changing the size or direction of the force applied to it.
28
30 sec
Q.
A pulley is a simple machine that makes work easier by.....
29
30 sec
Q.
A force is a _______ or ______.
30
30 sec
Q.
A lever pivots/moves around a ___________
31
30 sec
Q.
Rubbing your hands quickly together is an example of ______________
32
30 sec
Q.
You and your friend are playing at recess. Your friend wants to go higher and asks you for help. What force should you use for your friend to swing higher?
33
30 sec
Q.
What is the net force?
34
30 sec
Q.
The classes are playing tug of war. Mrs. Klenda's class pulls with a force of 45 N and Mrs. Rittle's class pulls with a force of 55 N. What is the net force? Who won?
35
30 sec
Q.
A boy pushes his wagon with a force of 6 N east as another boy pushes it with a force of 4 N east. What is the net force?
36
30 sec
Q.
What is the force required to move a 5,000 kg car with an acceleration of 4 m/s/s?
37
30 sec
Q.
What is the acceleration of a 4,000 kg car pushed with a force of 12,000 N?
