The height of an individual step on a staircase is closest to

This question is incomplete but the completed question is below

The height of an individual step on a staircase is

closest to

(1) 2.0 × 10⁻² m (3) 2.0 × 10⁰ m

(2) 2.0 × 10⁻¹ m (4) 2.0 × 10¹ m

The correct option is 2

Explanation:

This question seeks to test our knowledge of physical setting. Let's examine the options one after the other (if possible, you can get a 30-centimeter meter rule close-by because the question is/can be practical)

(1) 2.0 x 10⁻² m: This is same as 0.02 m or 2 cm; it's obvious this can't be the height of a step.

(2) 2.0 x 10⁻¹ m: This is same as 0.2 m or 20 cm. Using the meter rule you have, this should make sense but let's consider other options.

(3) 2.0 x 10⁰ m: Anything raise to power of zero is 1. Hence, this is 2m or 200 cm. This is obviously not the case also.

(4) 2.0 x 10¹ m: This is even larger than (3) above hence, it's less likely also.

From the above, the most closest answer is (2)

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.