The first thing we need to do is figure out what equation to use. We will use the following kinematic equation...
Δx = (final velocity + initial velocity) x time / 2
We know that the car accelerates from rest, so initial velocity = 0 m/s
We also know final velocity = 20 m/s and time = 12s
Now we just need to plug everything in.
Δx = (20 x 12)/2 = 120 meters
Answer:
The answer to your question is: Ke = 3000 Joules
Explanation:
Data
mass = 15 kg
speed = 20 m/s
Kinetic energy = ?
Equation


Ke = 3000 Joules
Sodium weights 0.968 so the density is equal to 968
Answer:
2500/240 will give the resistance to be 10.42
Formula of range is given by

here given that

θ=14.1∘

now by above equation

R = 66.7 m
so range will be 66.1 m