The answer is a because the car is in movement whereas in all the other choices the car isn't moving and is storing energy
Answer:
Final speed of the racer, v = 16.55m/s
Explanation:
It is given that,
Initial velocity of the racer, u = 12 m/s
Acceleration,
time taken, t = 7 s
We need to find the final velocity of the racer. Let it is given by v. It can be calculated using first equation of motion as :
v = 16.55 m/s
So, the final speed of the racer is 16.55 m/s. Hence, this is the required solution.
Answer:
Correct answer: V₀ = 10 m/s
Explanation:
Depending on time and acceleration, the distance formula is:
D = V₀t + a t²/2
in accordance with the given formula we conclude that the
initial velocity is V₀ = 10 m / s
God is with you!!!
Answer:
So coefficient of kinetic friction will be equal to 0.4081
Explanation:
We have given mass of the block m = 0.5 kg
The spring is compressed by length x = 0.2 m
Spring constant of the sprig k = 100 N/m
Blocks moves a horizontal distance of s = 1 m
Work done in stretching the spring is equal to
This energy will be equal to kinetic energy of the block
And this kinetic energy must be equal to work done by the frictional force
So
So coefficient of kinetic friction will be equal to 0.4081
Answer:
it should be the second option
Explanation:
I can't really see because the picture is kinda blurry