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Anvisha [2.4K]
1 year ago
4

A car accelerated uniformly from rest and attained a velocity of 8m/s. it then travels with the uniform velocity of for the next

22 seconds and later brought to rest in 5 seconds
(a )draw the velocity time graph
(b.) calculate the total distance covered (c.) calculate the distance covered after 25 seconds.​
Physics
1 answer:
Nastasia [14]1 year ago
8 0

Answer:

See below

Explanation:

See diagram below

8 seconds to 60 m/s     then    60 m/s for 22 seconds then   to 0 m/s in 5 seconds

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amm1812

A) position time graph for both is shown

here one of the graph is of lesser slope which means it is moving with less speed while other have larger slope which shows larger speed

At one point they intersects which is the point where they both will meet

B) Let the two will meet after time "t"

now we can say that

if they both will meet after time "t"

then the total distance moved by you and other person will be same as the distance between you and home

so it is given as

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4 years ago
Seema knows the mass of basketball. What other information is needed to find the balls potential energy
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Answer: The height (position) of the ball and the acceleration due gravity

Explanation:

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In the case of the Earth, in which the gravitational field is considered constant, the gravitational potential energy U will be:  

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h is the height (position) of the ball respect to a given point

Note the value of the gravitational potential energy is directly proportional to the height.

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For this problem, we will need the famous equation F=ma, as detailed by Isaac Newton.

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Plugging in all your numbers, you find:

F=(0.45 kg)(200 m/s^2) = 90 N of force.
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