A) How much does an 85g apple weight on the surface of the Earth? (gEarth = 9.8 m/s2)
b) And on the surface of the moon? (gmoon = 1.62 m/s2)
Justify the calculations

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0