chapter 4 ML&M

Question 1

if your mass doubles, your weight

Answer 1

also doubles

Question 2

according to Newton, the greater the distance between gravitationally interacting objects, the

Answer 2

less the gravitational force is between them

Question 3

inside a freely-falling elevator your

Answer 3

weight is 0

Question 4

occupants of the International Space Station experience weightlessness due to

Answer 4

the absence of support force

Question 5

a bullet fired from a rifle begins to fall

Answer 5

as soon as it leaves the barrel

Question 6

neglecting air resistance, after a ball leaves your hand when you toss it upward, the force on it

Answer 6

is only the force due to gravity, always directed downward

Question 7

an Earth satellite is simply a projectile

Answer 7

freely falling around Earth

Question 8

a “weightless” astronaut in an orbiting space vehicle is

Answer 8

without a support force

Question 9

compared with the period of satellites in orbit close to Earth, the period of satellites in orbit far from Earth is

Answer 9

greater

Question 10

A lunar month is about 28 days. If the Moon were closer to Earth than it is now, the lunar month would be

Answer 10

less than 28 days

Question 11

an Earth satellite in an elliptical orbit travels fastest when it is

Answer 11

nearest to the Earth

Question 12

escape speed from Earth is

Answer 12

11.2 km/s