1.
[Junior school science (physics)]
The formula of potential energy is
2.
[Junior school science (physics)]
If you have to push a car forward, what are the forces acting on you?
3.
[Junior school science (physics)]
Calculate the work done in moving a body through a distance of 20m pulled along a horizontal plane by a force of 10N applied to the plane
4.
[Junior school science (physics)]
Which of the following is needed by plants for production of food?
5.
[Junior school science (physics)]
Strictly speaking, a car will burn more gasoline if the car radio is turned on. This statement is ____
6.
[Junior school science (physics)]
Two identical arrows, one with twice the speed of the other, are fired into a hay bale. The faster arrow will penetrate _____.
7.
[Junior school science (physics)]
Which of the following is NOT a consequence of "The Law of Conservation of Energy"?
8.
[Junior school science (physics)]
There are how many types of force
9.
[Junior school science (physics)]
Electric current in a/an ____________________ circuit travels in MORE THAN ONE path.
10.
[Junior school science (physics)]
In order for a circuit to work, the path must be _________.
11.
[Junior school science (physics)]
How many Joules of energy are in one kilowatt-hour?
12.
[Junior school science (physics)]
A material through which electric current CANNOT pass easily is a/an ____________
13.
[Junior school science (physics)]
The following are examples of contact force except
14.
[Junior school science (physics)]
What work is done when a mass of 5kg is raised through a vertical height of 25m (take g=10m/s²)
15.
[Junior school science (physics)]
There are how many types of mechanical energy
16.
[Junior school science (physics)]
"Power" is defined as ________
17.
[Junior school science (physics)]
The SI unit of velocity is
18.
[Junior school science (physics)]
An object that has kinetic energy must be ____
19.
[Junior school science (physics)]
Electric current in a/an _____________________ circuit travels in ONE path
20.
[Junior school science (physics)]
What is the power of a girl that has done work of 50J in 10 secs
21.
[Junior school science (physics)]
22.
[Junior school science (physics)]
The potential energy of an object is equal to _______
23.
[Junior school science (physics)]
Calculate the work done if a box is pulled by a boy with a force of 150N through a distance of 50m
24.
[Junior school science (physics)]
An object with mass "m" kilograms is suspended "h" meters above the ground by a string. If the string is cut, what will the velocity of the object be at the instant it hits the ground?
25.
[Junior school science (physics)]
26.
[Junior school science (physics)]
The following are natural sources of energy except
27.
[Junior school science (physics)]
A person jumps to the ground from a platform 10 feet high. Which of the following is true?
28.
[Junior school science (physics)]
A feather and a coin are dropped in the air. Each falls with equal _____.
29.
[Junior school science (physics)]
The kinetic energy of an object will increase the most if you _______
30.
[Junior school science (physics)]
Which of the following is not a unit for power?
31.
[Junior school science (physics)]
A bullet of mass 40g is moving with a speed of 2.16km/h. Calculate its kinetic energy
32.
[Junior school science (physics)]
If a mass is at rest, what must be applied to cause it to move?
33.
[Junior school science (physics)]
If an object has kinetic energy, then it also must have _____.
34.
[Junior school science (physics)]
Which of the following are NOT types of energy
35.
[Junior school science (physics)]
An object is raised above the ground gaining a certain amount of potential energy. If the same object is raised twice as high it gains _____.
36.
[Junior school science (physics)]
An engine raised 10kg of water through a height of 60m in 20 secs ,what is the power of the engine (take g=10m/s²)
37.
[Junior school science (physics)]
As an object goes up a hill at constant velocity, which of the following is NOT true?
38.
[Junior school science (physics)]
What is current electricity?
39.
[Junior school science (physics)]
If you push on a wall with a force of 30 N, then _____
40.
[Junior school science (physics)]
Car A has a mass of 1000 kg and a speed of 60 km/h, and car B has a mass of 2000 kg and a speed of 30 km/h. The kinetic energy of car A is _____.
41.
[Junior school science (physics)]
Example of renewable energy include the following except
42.
[Junior school science (physics)]
When a bullet is fired from a rifle, the force on the rifle is equal to the force on the bullet. However, the energy of the bullet is greater than the energy of the recoiling rifle because the _______.
43.
[Junior school science (physics)]
A drawing that uses symbols to show how the parts of an electric circuit are connected is a/an ______________
44.
[Junior school science (physics)]
An object that has potential energy has this energy because of its _____.
45.
[Junior school science (physics)]
When an object is lifted 10 meters, it gains a certain amount of potential energy. If the same object is lifted 20 meters, its potential energy is ______.
46.
[Junior school science (physics)]
A feather and a coin dropped in a vacuum fall with equal ____
47.
[Junior school science (physics)]
Which of the following is NOT a good insulator?
48.
[Junior school science (physics)]
Kinetic energy is energy of a body due to its