A ball is thrown vertically upward with a velocity of 98 m/s. If it takes 10 seconds to reach the highest point then the acceleration of the ball is:
Correct answer: D. -9.8m/s2
- A. 9.8m/s2
- B. 98m/s2
- C. 980m/s2
- D. -9.8m/s2
Explanation
a = (Vf -Vi)/ ta = 0 - 98 / 10 = -9.8 m/s2.
This question appeared on the NUMS 2014 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Acceleration
Acceleration measures the rate at which velocity changes with time, including changes in speed, direction or both. Work includes average and instantaneous acceleration, the relation a = Δv/Δt, uniform acceleration equations, and interpreting velocity time and displacement time graphs, with acceleration carefully distinguished from velocity.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Acceleration questions
A motorist travelling at 10 ms-1 can bring his car to rest in a braking distance of 10 m. In what distance could he bring the car to rest from the period of 30 ms-1 using the same breaking force?
Suppose you drop an object from the roof of your house. It takes 2 seconds to reach the ground. What is the height of your house?
Which of the following pieces of ticker tape shows that the object is speeding up its motion?(Note: Suppose that the left hand side of the ticker tape shows the initial point of the tape.)
The time rate of change of velocity is called:
Two stones, 10kg and 50kg fall through 80m high cliff. Which stone has greater velocity at bottom? (ignoring air resistance) (g=10ms-2)
If the car is slowing down along negative x axis than acceleration will be along: