Question

A velocity versus time graph of a ball of mass 20gm rolling on a concrete floor as shown below.Calculate the acceleration and frictional force of the floor on the ball.
Send the picture of your calculation

A. 0.2 N
B. - 0.2 N
C. 0.5 N
D. - 0.5 N​

Answer 1

Answer:

.•♫•♬•ans is 0.5N•♬•♫•.

Step-by-step explanation:

.•♫•♬•We know that Acceleration a=

t

v−u

=

8−0

0−80

=−10ms

−2

Now, Force=ma

m=50g=

1000

50

kg

So, F=ma=

1000

50

×10=0.5N

frictional force oppose the motion, so it is taken as positive with direction opposote to velocity.•♬•♫•.