Practice Motion Of Objects Under The Influence Of Gravitational Force Of The Earth (9.2.2)

Practise this section

9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
If a stone and paper are dropped at the same time in a vacuum, which hits the ground first?
Show hintHide hint
Think about the effect of air resistance.
Question 2.
What is the constant acceleration due to gravity on Earth?
Show hintHide hint
It's the same value we use in our calculations for gravity.
3Question 3.
What is the acceleration due to gravity on Earth?
- 9.8 m/s^2
- 10 m/s^2
- 8.5 m/s^2
Show hintHide hint
Think about the standard value used in physics.
4Question 4.
True or False: In a vacuum, a feather will fall faster than a stone.
- True
- False
Show hintHide hint
Recall what happens in the absence of air.
Question 5.
An object is dropped from a height of 80 m. How long does it take to reach the ground? Assume g = 9.8 m/s^2.
Show hintHide hint
Rearrange the formula to solve for time.
Question 6.
A rock thrown upwards at 30 m/s reaches a height of 45 m. How long does it take to reach this height?
Show hintHide hint
Remember to use the negative acceleration due to gravity when solving.

5 more questions in this section. Enroll free to practise them all.