A small 175-g ball on the end of a light string is revolving uniformly on a frictionless surface in a horizontal circle of diameter 1.0 m
The ball makes 2.0 revolutions every 1.0 s.
(a) What are the magnitude and direction of the acceleration of the ball?
(b) Find the tension in the string.
(a) 79.0 m/s2 toward the center of the circle (b) 13.8 N
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The inner planets are composed of ____
a. rock and ice b. ice and gas c. rock and gas d. metal and ice e. rock and metal
If the acceleration vector of an object is directed perpendicular to the velocity vector,
A) the object is turning. B) the object is speeding up. C) the object is slowing down. D) the object is not moving. E) this situation would not be physically possible.
Calculate the pressure exerted on the ground due to person standing on one foot if the bottom of the person's foot is wide and long
A) 2.1 × 104 Pa B) 2.2 × 103 Pa C) 4.8 × 104 Pa D) 5.3 × 104 Pa