Mechanics | Relativity Answers

A 1155 kg automobile is pulled by a horizontal tow line with a net force of 848 N. What is the acceleration of the auto?

A ramp is 350m long. A bar starting at rest accelerates down the ramp at 1.2 m/s^2. 10s later a bowling ball is pushed down at 5m/s and accelerates 1.5m/s^2. What is the closest approach on the RAMP? Please help I have been trying forever.

Should the number of gear teeth be used instead of the pitch diameters for rotational speed calculations? Explain

you toss a small ball vertically up in the air how are the velocity and acceleration vector of the ball oriented with respect to one another during the balls flight up and down ?

The gravitational force that the sun exerts on the moon is perpendicular to the force that the earth exerts on the moon. The masses are: mass of sun=1.99 × 1030 kg, mass of earth=5.98 × 1024 kg, mass of moon=7.35 × 1022 kg. The distances shown in the drawing are rSM = 1.50 × 1011 m and rEM = 3.85 × 108 m. Determine the magnitude of the net gravitational force on the moon.

Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 87 kg, and the mass of the woman is 49 kg. The woman pushes on the man with a force of 56 N due east. Determine the acceleration (magnitude and direction) of (a) the man and (b) the woman.

Relative to the ground, a car has a velocity of 16.7 m/s, directed due north. Relative to this car, a truck has a velocity of 25.0 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?

An airplane requires 20 s and 400 m of runway to become airborne, starting from rest. What is its velocity when it leaves the ground? Please show how to solve.

a car starting from rest accelarates in a uniform fashion to 13.4m/s in a time of 6s,and immediately accelarates in a uniform fashion to 22.3m/s in a further 9.6s.find the distance travelled after (a)6s
(b)15.6s
find also the uniform accelaration of the car during (c) the first 6s & (d) the second 9.6s

Two bodies with moment of inertia I and I' ( I > I' ) have equal angular momentum, If E and E' are the rotational Kinetic energy , then
a) E = E'
b) E > E'
c) E < E'
d) E > or = E'