Apr 12, 2017 · In physics, a force is any interaction that, when unopposed, will change the motion of an object. [1] In other words, a force can cause an object with mass to change its velocity …

Nov 17, 2017 · The net force, F net, on the train would be F net = 5N − 8N = −3N From Newton's 2nd Law, often written F net = m ⋅ a, that must result in acceleration in the backward direction. …

Aug 22, 2016 · What law defines the concept that an object in motion will continue in motion unless it experiences a net external force?

8.29 \ "J" We must convert to SI units. Work is defined by the equation: W=F*d F is the force in newtons, d is the distance in meters. We have: 3 \ "ft"=0.9144 \ "m",20 \ "lbs"=9.07 \ "kg" So, …

An object with a mass of 2kg is revolving around a point at a distance of 7m. If the object is making revolutions at a frequency of 5H z, what is the centripetal force acting on the object?

A model train, with a mass of 2kg, is moving on a circular track with a radius of 2 3 m. If the train's rate of revolution changes from 1 2 H z to 1 5 H z, by how much will the centripetal force …

A model train with a mass of 2kg is moving along a track at 36 cm s. If the curvature of the track changes from a radius of 6cm to 3cm, by how much must the centripetal force applied by the …

No, the exhaust gas is exerting a force on the rocket, not the atmosphere. It works the same in space as it does near the earth. If I throw a ball toward you I must exert a force on the ball. …

The “reaction” force is a gravitational force acting vertically upwards on the Earth. The “reaction” must be: ① A force of the same type, i.e. a gravitational force since the action is a …

Velocity is the speed and direction of motion of an object. Velocity is a vector quantity of motion in that it has magnitude, or speed, and direction. To change an object's direction of motion …