Practice Motion In A Straight Line - Introduction (2)

Practise this section

8 questions

Flashcard drill
2 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
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define instantaneous velocity in your own words.
Show hintHide hint
Think of a snapshot of an object's motion.
Question 2.
What is the SI unit of acceleration?
Show hintHide hint
Consider how velocity changes over time.
3Question 3.
What is the definition of instantaneous velocity?
Show hintHide hint
Consider how velocity is defined over a small time interval.
4Question 4.
Average acceleration is calculated as:
- (v2 - v1)/(t2 - t1)
- (v1 + v2)/2
- v0 + at
Show hintHide hint
Review how acceleration relates to change in velocity.
Question 5.
An object moves according to the equation x(t) = 5t² + 2t + 1. What is the instantaneous velocity at t = 3 seconds?
Show hintHide hint
Use differentiation to find the velocity function.
Question 6.
A car travels 120m in 4 seconds. It then accelerates uniformly to 80 m/s in 10 seconds. What is its total displacement?
Show hintHide hint
Break it down into two segments: distance before and during acceleration.

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