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During running (forward motion only), if a negative horizontal force is applied to the runner, his/her velocity must be_______.
a. Slowing down
b. Speeding up
c. Constant
d. Not enough information given


Sagot :

Answer:

a. Slowing down

Explanation:

If a negative horizontal force is applied to the runner, this means a force is acting in the opposite direction of the runner's forward motion. According to Newton's second law of motion, a force applied in the opposite direction to the motion will cause a deceleration.

Therefore, the runner's velocity must be:

a. Slowing down