1. Deshaun Watson (100 kg) accelerates from rest to 9.0 m/s in 1.5 s. What is the average power output of Deshaun in kW? (2 mark)

P = 5400[W]

Explanation:

We must use the following equation of kinematics to calculate the acceleration.

where:

Vf = final velocity = 9 [m/s]

Vo = initial velocity = 0 (starting from rest)

a = acceleration [m/s²]

t = time = 1.5 [s]

Now with this second equation of kinematics, we can determine the distance traveled.

where:

x= distance [m]

Now we must use Newton's second law which tells us that the sum of forces is equal to the product of mass by acceleration.

∑F = m*a

Now replacing:

Ahora la potencia se puede calcular por medio del producto de la fuerza por velocidad.

where:

P = power [W]

F = force = 600 [N]

v = velocity = 9 [m/s]

the body's situation won't change the forces are equal opposit and on the same body

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.