click below
click below
Normal Size Small Size show me how
physical science
chapter 3 test review
question | Answer |
---|---|
what is the momentum of a 0.15 kilogram baseball moving at 20 m/sec? | 3kg m/sec |
an astronaut is planning a trip to a new planet. according to newtons law of universal gravitation, the astronaut wight on the new planet will be greater than his weight on earth if... | the new planet has more mass than earth but the same radius. |
what is the approximate weight in newtons of a 7.0 kilo bowling ball? | 70 newtons |
when the force on an object are balanced we say that the object.... | is in equilibrium |
newtons third law of motion involves what? | a force pair acting on two different objects |
a girl sitting on a swing exerts 490 newtons down and the swings ropes exerts 245 newtons each up. what is the net force? | o newtons |
compared to your weight and mass on earth if you were on the moon... | your weight would be less but your mass would remain the same |
objects tend to resist changes in motion. this property is called... | Inertia |
a 0.15 kg baseball and a 7.25 kg bowling ball are both rolling at 3 m/sec. which is easier yo stop? | the baseball |
the acceleration due to gravity is approximately 10 m/sec. how fast will a golf ball being dropped after 3 seconds | 30 m/sec |