Homework Statement
Two Questions:
1) A 9.0-kg ball is traveling to the right at 8.0 m/s until it impacts a 3.0-kg stationary ball. After the collision, the 9.0-kg ball is traveling at 5.61 m/s at an angle of 7.8º above the horizontal. Calculate the velocity of the 3.0-kg ball after the...
Homework Statement
Using the graph below, what is the magnitude of the impulse provided to a 48 g tennis ball that is swerved due south?
Also, What is the velocity of the ball when the racquet and ball separate?
Homework Equations
p=mv (I think).
Fnet x delta Time = P (maybe)?The Attempt...
If sinx = -0.40 and tanx > 0, then secx, to the nearest hundreth, is
A) 0.92
B) -0.92
C) -1.09
D) 1.09
So I figured that sin^-1 = -23.57817848, but I don't know how to get sec, can someone help!
so the work I did in order to determine the spring constant is as follows:
F=KX
K=F/X=mg/x=(5.00kg)(9.81m/s2)/0.255m=192N/m
I don't understand part b though!
Suppose a spring is attached vertically to the ceiling of an elevator. When a 5.00Kg mass is attached to the spring, it descends a distance of 25.5 cm.
a) what is the spring constant of the spring?
I found out that it was 192 N/m, so my problem is with part B!
b) how far would the spring...