Multiple Choice Questions 1
What force primarily propels a rocket forward?
thrust
Newton's third law of motion is best demonstrated in rocket motion by:
exhaust gases pushing down and rocket moving up
A rocket model has a mass of 3.00kg and accelerates upward at 10.0 m/s2. What is the thrust force?
30.0 N
A student observes a rocket launch from 10.0 m away at a 40.0 degree angle. What is the height of the rocket?
8.39 m
What is the primary purpose of fins on a rocket?
stabilize the flight
What happens to a rocket's mass as it ascends?
it decreases due to fuel consumption
A 7.00kg rocket experiences 25.0N of air resistance while accelerating at 10.0 m/s2. What is the net force on the rocket?
7.00 * 10.0 = 70.0 N
70.0 N - 25.0 N = 45 N net force
A photographer is 125 m from the launch pad and sees the rocket at an angle of 45.0 degrees
125 m
In space, a rocket continues moving forward after engine cut off because of:
momentum
Which of the following is not necessary for a rocket to launch?
oxygen, fuel, air combustion
air
A drone records the rocket at an angle of 80.0 degrees from a horizontal distance of 100.0 meters. Calculate the height of the rocket?
567 m
The path of a rocket follows is mostly determined by:
its initial velocity and angle
Why do rockets need to overcome gravity and air resistance?
to lift off and reach space
The principle of conservation of momentum in rockets means:
total momentum remains constant if no external force acts on the rocket
Rocket engines are typically rated by:
thrust