Please help me, this school work is not the easiest for me.

Physics

2 answers:

lidiya [134]2 years ago

7 0

Answer:

A = mm2

M = km2

F = mg

Explanation:

kykrilka [37]2 years ago

5 0

Answer: Look at my explanation pls :)

Explanation:

First box (left): 5
First box (right): N (newtons)

Second box (left): 0.05
Second box (right): kg

Third box (left): 100m/s^2
Third box (right): m/s^2 (metres per second squared/cubed)

How I solved for acceleration:
F = ma (force = mass x acceleration)
5N = (0.05)(a)
5N = 0.05a
100m/s^2 = a

Hope this helps!

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Part C: Quantitative Problems when vf is not 0

Alina [70]

Answer:

(a)

$\triangle v=-8\ m/s\\\triangle mv=-56\ kg.m/s$

(b)

1120 N

Explanation:

Change in velocity, $\triangle v$ is given by subtracting the initial velocity from the final velocity and expressed as $\triangle v= v_f -v_i$

Where v represent the velocity and subscripts f and i represent final and initial respectively. Since the ball finally comes to rest, its final velocity is zero. Substituting 0 for final velocity and the given figure of 8 m/s for initial velocity then the change in velocity is given by

$\triangle v=0-8=-8\ m/s$