Question

A ball rolls off a table with a horizontal velocity of 3 m/s. If it takes 0.3 seconds for the ball to reach the floor, how high above the floor
is the tabletop? Consider the value of g approximately as 10 m/s2

Answer 1

The height of the table above the ground is 0.45 m.

Data obtained from the question

From the question given above, the following data were obtained:

• Horizontal velocity (u) = 3 m/s
• Time (t) = 0.3 s
• Acceleration due to gravity (g) = 10 m/s²
• Height (h) =?

How to determine the height

The height of the table can be obtained by using the following formula:

h = ½gt²

h = ½ × 10 × 0.3²

h = 5 × 0.09

h = 0.45 m

Thus, the height of the table is 0.45 m

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