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belka [17]
3 years ago
9

A 70 kg high-jumper launches himself in the air with an upward momentum of 315 kg-m/s. What is his initial velocity? A. 4.5 m/s

upward B. 9.8 m/s downward C. 70.0 m/s downward D. 385 m/s upward

Physics
1 answer:
guapka [62]3 years ago
7 0
Pls don't mind my writing. hope this helps you tho

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Draw Graph for the derivation of three equations of Motion​
Over [174]

Answer:

Hey mate I shall not tell you the answer I shall explain it to you after this if still you can't understand then say

Explanation:

Derive v = u + at by Graphical Method. Consider the velocity – time graph of a body shown in the below Figure

Derive s = ut + (1/2) at2 by Graphical Method. Velocity so time graph to derive the equations of motion.

Derive v2 = u2 + 2as by Graphical Method. Velocity–Time graph to derive the equations of motion.

I hope you understand now

enjoy your day

#Captainpower :)❤❤

5 0
3 years ago
What conditions would have to exist in order for a space station to support life
amid [387]

Answer:

Mechanical life support system

Explanation:

Mechanical life support system is one which allows humans to survive on places or conditions which are not natural to their survival so by the help of mechanical devices humans can survive in places like underwater or in space.

The life support system may not only provide water, air and food but it should also keep a proper check on the maintenance of body pressure, temperature, management of the waste product and the absorption or the radiations from the body itself.

Thus mechanical life support system are designed with the hep of high engineering techniques for the safety and security as these are life-critical.

4 0
3 years ago
What can cause a production possibilities curve to move to the right?
Bas_tet [7]

Answer:

Option D

a new invention lowers the cost of production

Explanation:

When there is a new invention lowers the cost of production, the production is likely to increase since the time allocated is as previous. Therefore, the curve moves to the right, to indicate a positive direction

5 0
3 years ago
Which lenses are convex? Check all that apply. 1 2 3 4 5 6
Goryan [66]

Answer:

1, 2, 3, and 6 are the answers.

Explanation:

sorry for the late response

5 0
3 years ago
Read 2 more answers
A mover loads a crate onto a truck bed 1.6m from the street using a ramp that is 4.6m long. What is a mechanical advantage?
Ne4ueva [31]

Answer:

Mechanical advantage = 2.875

Explanation:

Given:

A diagram is shown below for the above scenario.

Length of ramp (Effort arm) = 4.6 m

Height of truck bed ( Resistance length) = 1.6 m

Mechanical advantage (MA) is the ratio of effort arm and resistance length.

So, mechanical advantage is given as,

MA=\frac{\textrm{Effort arm}}{\textrm{Resistance length}}= \frac{4.6}{1.6}=2.875

6 0
3 years ago
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