Physical Science - Chapter 1 Reading Check Quiz
Compared with the mass of a certain object on Earth, the mass of the same object on the Moon is
The same
The gain in speed each second for a freely falling object is about:
10 m/s
What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?
0 m/s^2
A 1-kg mass at the Earth's surface weighs about
10 N
A 300-kg bear grasping a vertical tree slides down at constant velocity. The friction force between the tree and the bear is
3000 N
Hang from a pair of gym rings and the upward support forces of the rings will always
Add up to equal your weight
An object in mechanical equilibrium is an object: - At rest - All of these - Moving with constant velocity - Having no acceleration
All of these
The two measurements necessary for calculating average speed are:
Distance and time
Whenever the net force on an object is zero, its acceleration
Is zero
Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has the same: - All of these - Volume - Mass - Weight - None of these
None of these