Provide an expression for the position of the caboose as a function of time after its separation from the train.
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- A body moves from:position (1.0 m)i− (3.0 m)j where its velocity is (2.0 m/s)i+ (0.5 m/s)jto position (−1.0 m)i+ (1.0 m)j where its velocity is (4.0m/s)iExpress the body’s displacement (vector) delta r.Express the body’s change in velocity (vector) delta v.During a rockburst (violent rock failure underground), a rock block was ejected as a projectile from the tunnel wall at a height of 1.5 m and the block landed on the floor at a distance of 2.5 m from the left wall. Determine the ejection velocity Ve for theta = 20degrees.A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 3.72 m/s2. (a) What is the acceleration of the bolt relative to the train car? m/s2 southward and m/s2 downward(b) What is the acceleration of the bolt relative to the Earth? m/s2 downward(c) Describe the trajectory of the bolt as seen by an observer fixed on the Earth.
- DynamicsSpeed is the magnitude of the velocity. When we say speed is constant, we mean that the magnitude of the velocity is constant. If the speed of a particle is constant can we say that it doesn't experience any acceleration?Michael Jordan was said to have a hang-time of 3.0 seconds (at least according to a popular NIKE commercial). Use kinematic equations to determine the height to which MJ could leap if he were wearing NIKE shoes and had a hang-time of 3.0 seconds.