Homework Statement
Just before striking the ground, a 200kg mass has 400J of KE. If friction can be ignored, from what heigh was it dropped
Homework Equations
KE = (1/2)mv^2
PEg = mgh
The Attempt at a Solution
I drew a mass of 200kg and I drew the normal force at the top as...
Homework Statement
A marble, rolling with speed 20cm/s, rolls off the edge of a table that is 80 cm high. (a) How long does it take to drop to the floor? (b) How far, horizontally, from the table edge does the marble strike the floor?
Homework Equations
y = y0 + vy0t - (1/2)gt2...
Homework Statement
A truck is moving north at a speed of 70 km/h. The exhaust pipe above the truck cab sends out a trail of smoke that makes an angle of 20 degrees east of south behind the truck. If the wind is blowing directly toward the east, what is the wind speed at that location...