[iamakara]

hello I have a few questions :confused:
thank you!:)

1) Calculate the force you exert as you stand on the floor assuming you weigh 180 lb. (1 lb = 0.454 kg).

2)A dragster starts with zero velocity and completes a 402.1 m (0.2513 mile) run in 4.910 s. If the car had a constant acceleration, what would be its acceleration and final velocity?
m/s2 =?
m/s=?

3)After a day of testing race cars, you decide to take your own 1460 kg car onto the test track. While moving down the track at 10.0 m/s, you uniformly accelerate to 32.0 m/s in 10 s. What is the average net force that you have applied to the car during the 10 s interval?
N=?
n is newtons

4)A race car has a mass of 718 kg. It starts from rest and travels 44.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it?
N=?

5)Your mass is 80 kg. You stand on a bathroom scale in an elevator on Earth.

(a) What force would the scale exert when the elevator moves up at a constant speed?
N=?
(b) What force would the scale exert when it slows at 2.2 m/s2 while moving upward?
N=?
(c) What force would the scale exert when it speeds up at 2.2 m/s2 wile moving downward?
N=?
(d) What force would the scale exert when it moves downward at a constant speed?
N=?
(e) What force would the scale exert when it slows to a stop at a constant magnitude of acceleration?



6) A boy exerts a 38 N horizontal force as he pulls a 54 N sled across a cement sidewalk at constant speed. What is the coefficient of kinetic friction between the sidewalk and the metal sled runners? Ignore air resistance.



thank you for the help everyone!

[Capuchin]

Hi, Have you tried some of these questions? How far have you got?

I'm happy to help you understand, but I will not do your homework for you, because that won't help you to learn.

Let me know how you are getting on and I will do my best to help you :)

Most of these questions ask for you to apply SUVAT equations and F = ma, which you should have been taught about.
Let me know if you get stuck!