Acar starts from rest and accelerates from u seconds until it reaches a speed of 10ms the car then travels at 10ms for 2u seconds. the diagram shows the speed time graph for journey. the distance travlled by the car in the first 3u seconds is 125m a, find the value of u b, find the acceleration in the first u seconds ?

Which describe reflection? check all that apply. light bounces off a boundary.

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n