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2 years ago

Which law of motion accounts for the following statement? "A ball hit by a man travels faster than one hit by a boy."

Physics

2 answers:

7nadin3 [17]2 years ago

6 0

Answer:

Newton's second law of motion accounts for the "A ball hit by a man travels faster than one hit by a boy."

Explanation:

Second law of motion relates the force exerted by an object and the acceleration of that object, of a given mass.

Mathematically it is F = ma where F is the force, m is the mass and a is the acceleration of an object.

Hence according to that , for a given mass, it can be seen that force is directly proportional to the acceleration. More force implies more acceleration. Lesser force implies lesser acceleration and so moves slowly.

That's why when the same ball is hit by the father with a greater force, it travels faster than when hit by the child with a lesser force.

kifflom [539]2 years ago

5 0

A ball hit by a man is stronger than a ball hit by a man because the man uses more force when hitting the ball than the boy does.

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Convex lens and convex mirrors are similar that

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2 years ago

a baseball player is dashing toward home plate with a speed of 200 feet per hour. When he decides to hit the dirt. he slides for

Serggg [28]

To solve this problem we will use the kinematic formula for the final velocity.

$V_f_x = V_0_x + a_xt$

The final speed is 0 at the moment the player stops.

The time until it stops is 1.3 s

The initial speed is 200 feet / s Note (check the speed units in the problem statement, 200ft / s is very much and 200ft / h is very small)

Then, we clear the formula.

$a_x = \frac{(Vfx-V0x)}{t}\\ a_x = \frac{(0-200)}{1.3}\\ a_x = -153.5 ft / s ^ 2$

Because the player is slowing down, the acceleration goes in the opposite direction to the player's movement, and that is why it is negative.

To answer part b) we use the following formula.

$Vf ^ 2 = Vo ^ 2 + 2a * (x_2 - x_1)\\\\ (x_2 - x_1)= \frac{(V_f ^ 2-V_0 ^ 2)}{2a}\\\\ (x_2 - x_1)= \frac{(0-200 ^ 2)}{- 2 * 153.5}\\\\ (x_2 - x_1)= 130.29 feet$

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3 years ago

A photon has 3.4 × 10–18 joules of energy. Planck’s constant is 6.63 × 10–34 J•s.

hodyreva [135]

Ok i will answer for real this time. Please give me brainliest.
<span>The Answerr is:
5.12*10^15. Since e=h*f, f=e/h. 3.4*10^(-18)/h.
</span>i am so sorry i was doing a challenge and i needed answers to get 100 pts.
Hope I Helped
~TeenOlafLover <3

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2 years ago

Which of the following type of personal debts is usually considered wise and justified? A. credit card purchases of luxuries tha

NeTakaya

Answer:

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3 years ago

Read 2 more answers

A runner traveling with an initial velocity of 1.1 m/s accelerates at a constant rate of 0.8 m/s2fora time of 2.0 s.(a).What is

pychu [463]

Answer:

The final velocity of the runner at the end of the given time is 2.7 m/s.

Explanation:

Given;

initial velocity of the runner, u = 1.1 m/s

constant acceleration, a = 0.8 m/s²

time of motion, t = 2.0 s

The velocity of the runner at the end of the given time is calculate as;

$v = u + at$

where;

v is the final velocity of the runner at the end of the given time;

v = 1.1 + (0.8)(2)

v = 2.7 m/s

Therefore, the final velocity of the runner at the end of the given time is 2.7 m/s.

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2 years ago