1 Newton =
1kgm/sec2
10kgm/sec2
1kg/sec2
1 m/sec
The reason that things fall down to the ground is because of:
Air pushing them down
A force pulling them down
Friction
Upthrust
What is the usual way of writing Hooke's law in symbols?
F = K / x
F= x / k
F = k x
None of these.
Which of the following is defined as the overall rate at which an object moves.
Average speed.
Acceleration.
Average velocity.
A woman on the surface of the Earth has a mass of 50 kilogram and a weight of 490 newtons. If the woman is floating freely inside a space habitat far away from Earth, she would have
Less weight and more mass.
Less weight and the same mass.
Less weight and less mass.
More weight and less mass.
Which of the following is a push or pull that is capable of changing the velocity of a mass?
Inertia.
Force.
Time.
Gravity and magnetism are forces which:
Work at a distance
Need to be touching to work
Get stronger the further away they are
Get weaker near things
Which of the following can cause an object to speed up, slow down, or change direction?
Inertia
Force
Time
Which of the following is the force generated by the gravitational attraction of the earth?
Gravity.
Friction.
Weight.
Magnetism .
An object of mass of 12 kg on the earth would have a mass of 12 kg on the moon. This same object will have a weight of 120 N on the earth and a weight of 20 N on the moon. This difference is due to the fact that
The moon's gravitational attraction is 1/6 of the earth's gravitational pull.
The earth's gravitational attraction is 1/6 of the earth's gravitational pull.
Both A and B.
