Question

Which one of the following demonstrates the greatest acceleration?

A. car going from 0 m/s to 100 m/s in 50 seconds

B. small marble rolling from 10m/s to 20 m/s in 1 second

C. 2,000-lb elephant walking at a steady speed of 5 m/s

D. roller coaster moving uphill from 1 m/s to 2 m/s in 1 second

Answer 1

@Rushwr :)

Answer 2

What do u think ?

Answer 3

C?

Answer 4

No steady state means no acceleration , u go in the same speed

Answer 5

Nop
Acceleration = final velocity - initial velocity divided by the time taken

Answer 6

the acceleration in A = 100-0 / 50 = 100/50 = 2ms^-1

Answer 7

It has got to be D then, right?

Answer 8

Nop the answer is B
Velocity in B = 20 -10/1 = 10/1 = 10ms^-1

Velocity in D = 2-1/1 = 1/1 = 1ms^-1

Answer 9

Got it right?

Answer 10

thanks alot

Answer 11

yea

Answer 12

oh no problem :)