Question

a ball is released from rest and rolls down an inclined plane, requiring 4s to cover a distance of 100 cm. a.) what is its acceleration in cm/s2?
b.) how many centimeters would it have fallen vertically in the same time.​

Answer 1

Explanation:

a) Let the acceleration of the ball be a cm/s²

Applying equations of motion,

S = ut + 1/2×at²

=> 100cm = 1/2 × a × 4²

=> a = 100/8 = 12.5 cm/s²

b) For vertical fall,

a = g= 10 m/s²

S =1/2 × 10 × 4² = 80 m = 8000 cm

Answer 2

Answer:

A. Acceleration

a=2d/t²

a=2(100)/4²

a=12.5