A badminton shuttle, or "birdie" is struck, giving it a horizontal velocity of 73m/s [W]. Air resistance causes a constant acceleration of 18m/s^2 [E]. Determine its velocity after 1.6s.
I've used the equation V2=V1+ax x t
V2= Final velocity
V1=initial velocity
A= Acceleration
t=time...
A ball has a mass of 240g. (which would be 0.24kg?) is moving through the air at 20.0m/s with a gravitational potential energy of 70J. With what speed will the ball hit the ground.
Equations:
Ek=mv^2/2 (kinetic energy)
Eg=mgh (Gravitational potential energy)
Ek=mgxdisplacement (if you...
A person with mass 55kg walks at a constant speed up a set of stairs with 20 steps, each 20 cm high.
I have to find the work load.
Formula: W=FxD where F is force and D is displacement.
The book says my answer should be 2.2x10^3. OR 2,200 Joules.
I really don't know how to do...
A string is attached between two boxes with equal masses of 5kg EACH. The boxes are being pulled with a force of 30N and the acceleration is 3m/s^2.
I think T=ma. But does 'm' mean I have to add both masses?
T=10x3
=30N.
I'm desperate to know if this is right or wrong. Thanks a...