3 years ago

How much work does it take to accelerate from 5 m/s to 10 m/s?

Physics

1 answer:

REY [17]3 years ago

3 0

Answer:

KE (5) = 1/2 M V^2 = 25/2 M

KE (10) = 1/2 M V^2 = 100/2 M

KE (10) - KE (5) = M/2 (100 - 25) = 75/2 / M

An object traveling at 10 m/s has 4 times the kinetic energy as an object traveling at 5 m/s

Total work would depend on the mass being accelerated

You might be interested in

A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the point of release. (a

Readme [11.4K]

Answer:

Part a)

a = -9.81 m/s/s

Part b)

v = 0

Part c)

v = 9.81 m/s

Part d)

$H = 4.905 m$

Explanation:

Part a)

During the motion of ball it will have only gravitational force on the ball

so here the acceleration of the ball is only due to gravity

so it is given as

$a = g = 9.81 m/s^2$

Part b)

As we know that ball is moving against the gravity

so here the velocity of ball will keep on decreasing as the ball moves upwards

so at the highest point of the motion of the ball the speed of ball reduce to zero

$v_f = 0$

Part c)

We know that the total time taken by the ball to come back to the initial position is T = 2 s

so in this time displacement of the ball will be zero

$\Delta y = 0 = v_y t + \frac{1}{2} at^2$

$0 = v_y (2) - \frac{1}{2}(9.81)(2^2)$

$v_y = 9.81 m/s$

Part d)

at the maximum height position we know that the final speed will be zero

so we will have

$v_f^2 - v_i^2 = 2 a d$

here we have

$0 - (9.81^2) = 2(-9.81)H$

$H = 4.905 m$

4 0

3 years ago

One object has twice as much mass as another object. The first object also has twice as much a velocity. b gravitational acceler

Gemiola [76]

It would be c. As it can’t accelerate faster thus not having a faster velocity so it’s inertia

6 0

3 years ago

Which is the most important factor in determining climate?

Leokris [45]

Answer:

B took the test (k12)

Explanation:

6 0

3 years ago

I'm not sure about these 2 questions

Natali [406]

2) Newton's third law<span>: For every action, there is an equal and opposite reaction.

3) Please provide the diagram </span>

7 0

4 years ago

A weather forecaster uses a computational model on a Monday to predict the weather on Friday. Why might that forecast change? (1

grandymaker [24]

Answer:

(d) is your answer for your question

7 0

3 years ago