Mechanics | Relativity Answers

A particle starts moving with speed 3m/s and accelerates for 5 seconds with acceleration 2m/s^2.Find the displacement of the particle??

what is the net force of a 60 pound fore that is pushing left against a 40 pound force pushiing right

what is it called when the net force is not zero

A runner is practicing on a circular track that is 435 m in circumference. From the point farthest to the west on the track, he starts off running due north and follows the track as it curves around toward the east.
(a) If he runs halfway around the track and stops at the farthest eastern point of the track, what is the distance he traveled?
m

(b) What is his displacement?
magnitude m
direction

Q.A stone, of mass m, is attached to a strong string and whirled in a vertical circle of radius r. At the exact bottom of the path the tension in the string is 3 times the stone's weight. The stone's speed at this point is given by ...?
A. 2gr)1/2.

please explain everything in detail

Runner A is initially 5.0 km west of a flagpole and is running with a constant velocity of 7.5 km/h due east. Runner B is initially 6.0 km east of the flagpole and is running with a constant velocity of 8.5 km/h due west. How far are the runners from the flagpole when their paths cross?

Can a situation exist in which an object has zero acceleration and nonzero velocity?

Two balls are thrown from the same point at same time,one vertically upwards with speed of 25meters per second and the other vertically downwards with a speed of 15meters per second.Find how far apart the balls are after 5 seconds and the velocities of the balls?

A cyclist moves along straight path 3.0 during the first second, 6m during next 2 seconds and 9m during 3 seconds. describe the motion of the cyclist.

An airplane travels at 450 km/he. it can fly 20.0 miles on one gallon of fuel. the density of the fuel is 0.782g/mL. How many pounds of fuel will this plane need to travel from Chicago to Miami, a distance of 1400 miles?