Aball is thrown 20.0 m/s at an angle of 40.0° with the horizontal. assume the ball is thrown at ground level.

a. how long does it take the ball to reach the wall?
b. at what height does the ball hit the wall?
c. is it moving up or down at the instant before it hits the wall?

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What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?