Answer:
3 m/s
Explanation:
We'll begin by calculating the change in displacement of the jogger. This can be obtained as follow:
Initial displacement (d₁) = 4 m
Final displacement (d₂) = 16 m
Change in displacement (Δd) =?
Δd = d₂ – d₁
Δd = 16 – 4
Δd = 12 m
Finally, we shall determine the determine the average velocity. This can be obtained as follow:
Change in displacement (Δd) = 12 m
Time (t) = 4 s
Velocity (v) =?
v = Δd / t
v = 12 / 4
v = 3 m/s
Thus, the average velocity of the jogger is 3 m/s
No, because he was a philosopher
<span>Back in the day, one measured a printer's speed in CPM, which stands for characters per minute. Most of the modern printers that exist today, including the inkjet printer measure their speed in PPM, which is also known as pages per minute.</span>
Explanation:
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To solve this problem we will apply the concept related to the moment, which describes the change in speed in proportion to the body mass. The momentum can be described under the general equation

Where,
m = mass
v = Velocity
The change in momentum is the difference between the final moment and the initial moment

Where,
Final momentum
Initial momentum
After catching the ball, the ball comes to rest position and speed of the ball is zero.

The change in momentum on catching the ball is


The momentum during the catching of the ball is

Now during deflection of the ball, we know that there is an initial momentum and a negative final momentum because it moves with the same speed but in the opposite direction, that is

The momentum is negative since during deflection the ball moves with same speed in opposite direction


Therefore, the correct ansswer is B: catch the ball in order to minimize your speed on the skateboard