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N76 [4]
3 years ago
13

A skier accelerates down the hill at 3m/s2 how fast is he going in 4 seconds​

Physics
1 answer:
almond37 [142]3 years ago
7 0

Answer:

Explanation: simple kinematics

we suppose that initially vo= 0 so if the skier moves 4s :

vf = vo +at = 0 + 3*4 = 12 m/s

best wishes from colombia

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Anettt [7]

Answer:

[1, 6, -2]

Explanation:

Given the following :

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[-1 2 -3] × 2 = [-2 4 -6]

Location of ship after two hours :

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[3 2 4] + [-2 4 -6] = [3 + (-2)], [2 + 4], [4 + (-6)]

= [3-2, 2+4, 4-6] = [1, 6, -2]

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3 years ago
If the vertical axis and time on the horizontal axis if the speed is steadily increasing could the speef line ever become perfec
Phantasy [73]

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3 years ago
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A 2.00 kg box slides on a rough, horizontal surface, hits a spring with a speed of 1.90 m/s and compresses it a distance of 10.0
oksian1 [2.3K]

Answer:

Explanation:

Given

mass of box m=2\ kg

speed of box v=1.9\ m/s

distance moved by the box x=10\ cm

coefficient of kinetic friction \mu _k=0.66

Friction  force f_r=\mu_kN

f_r=0.66\times mg

f_r=0.66\times 2\times 9.8=12.936 \N

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\frac{1}{2}mv^2=f_r\cdot x+\frac{1}{2}kx^2

\frac{1}{2}\times 2\times 1.9^2=12.936\times 0.1+\frac{1}{2}\times k\times (0.1)^2

3.61-1.2936=0.005\times k

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3 0
3 years ago
Read 2 more answers
MULTIPLE CHOICE
Juli2301 [7.4K]

Answer:

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Explanation:

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8 0
2 years ago
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