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melisa1 [442]
3 years ago
12

. Since the man is walking at a constant velocity, he has what acceleration

Physics
1 answer:
docker41 [41]3 years ago
6 0
If he’s walking at a constant velocity there is no acceleration.
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If two arm wrestlers exert a force on each other’s hands, and the hands don’t move, the forces must be *
jeyben [28]
Balanced. They’re equally as strong so as their arm wrestling, neither of the men’s hands go down. Because they’re equally/balanced as strong.
3 0
3 years ago
What is the minimum speed must a salmon jumping at an angle of 35.2 leave the water in m/s?
yuradex [85]

Height of the waterfall is 0.449 m

its horizontal distance will be 2.1 m

now let say his speed is v with which he jumped out so here the two components of his velocity will be

v_x = vcos35.2 = 0.817 v

v_y = vsin35.2 = 0.576 v

here the acceleration due to gravity is 9.81 m/s^2 downwards

now we can find the time to reach the other end by y direction displacement equation

\Delta y = v_y * t + \frac{1}{2} at^2

-0.449 = 0.576 * v *t - \frac{1}{2}*9.81 * t^2

also from x direction we can say

\Delta x = v_x * t

2.1 = 0.817 v* t

now we have

v* t = 2.57

we will plug in this value into first equation

- 0.449 = 0.576 * 2.57 - 4.905 * t^2

1.93 = 4.905 * t^2

t = 0.63 s

now as we know that

v* t = 2.57

t = 0.63 s

v = \frac{2.57}{0.63}

v = 4.1 m/s

so his minimum speed of jump is 4.1 m/s

8 0
3 years ago
The horizontal motion of a launched projectile affects its vertical motion.
Talja [164]

The horizontal motion of a launched projectile affects its vertical motion is false

Answer: False

<u>Explanation: </u>

As the trajectory falls on a plane, all the components like displacement, velocity can be classified in two components termed as horizontal and vertical component.

In a projectile motion, the horizontal components of displacement and velocity remains constant and there is change only in the vertical component of displacement and velocity.

Both components are not dependent to each other. So, the horizontal motions of a launched projectile does not affect its vertical motion.

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URGENT HELP!! PLEASE ANSWER QUICK
N76 [4]
A. It must provide water to certain areas of the farm
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What is 3^7*8^3*5^6?
LiRa [457]

Answer:

17496000000

Explanation:

4 0
3 years ago
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