Determine (a) the speed with which the train needs to travel on a curved section of the track if the magnitude of the side force to be felt by a passenger of weight � in a standard car with no tilt is 0.20�, (b) the required angle of tilt � if the passenger is to feel no side force when the train is traveling at 180 km/h. Notice that a side force is defined here as a force that is parallel to the floor of the car; and the rated speed of a curved section of track is defined as the speed at which a train should travel if no lateral friction force is to be exerted on its wheels.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big

Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.