High School

A softball with a mass of 0.25 kg is pitched at 100 km/hr. By the time it reaches the plate, it may have slowed by 10 percent. What is the speed of the softball when it reaches the plate?

A) 90 km/hr
B) 91 km/hr
C) 92 km/hr
D) 93 km/hr

Answer :

Final answer:

The final speed of the softball is 90 km/hr.

Explanation:

To answer the given question, we need to calculate the final speed of the softball. We know that the initial speed of the softball is 100 km/hr and it slows down by 10 percent. To find the final speed, we can multiply the initial speed by 0.9 (1 - 10%).

Final Speed = Initial Speed × (1 - 10%)

Final Speed = 100 km/hr × 0.9

Final Speed = 90 km/hr

Therefore, the correct option is A) 90 km/hr.

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