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Question1: A projectile is launched vertically upward with an initial velocity of 20ft/sec from the top of a 50foot building?(A) Write an equation of H (t) that describes the height of the projectile after t seconds?(B) When will the projectile hit the ground?(C) When does the projectile reach its maximum height?(D) What is the maximum height?Question2: A spherical Balloon is inflated at the rate of 144pie cubic inches per minute (in^3/min). How fast is the radius of the balloon changing when the radius is 4 inches? Recall the formula for volume of sphere: V(4/3) pieR^3?
A 3.00-g copper penny at 25.0 C drops 50.0 m to the ground. (a) If 60 percent of the initial potential energy of the coin earth system goes increasing internal energy of the coin determine the coin's final temperature (b) does the result depends on m..
An 845-N sled is pulled a distance of 173 m. The task requires 1.20 x 10^4 J of work and is done by pulling on a rope with the force of 142 N. At what angle is the rope held.
A mass of 1.62 kg stretches a vertical spring 0.328 m. If the spring is stretched an additional 0.136 m and released, how long does it take to reach the (new) equilibrium position again.
How to find the magnetic field
A caterpillar climbs up a one-meter wall. For every 3 cm it climbs up, it slides down 1 cm. It takes 10 minutes for the caterpillar to climb to the top. Compute the speed at which the caterpillar travels.
Discuss briefly centripetal acceleration, the speed and the force exerted by a ball attached to a string.
A 2500-kg sport utility vehicle travelling at 92 km/h can be stopped in 0.25 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash, and..
A ferrari race car on the straight road starts from rest, accelerating at 2.00 m/s^2 until it reaches a speed of 20.0m/s. Then the car travels for 20.0 s at the constant speed until the brakes are applied, stopping the truck in a uniform manner in an..
What is an angular speed about the center of mass
The equations of force and motion objective questions.
Two spherical conductors are connected by a long conducting wire and a total charge of 20.0 μC is placed on this combination. One sphere has a radius of 4.0 cm while the other has a radius of 6.0 cm. Explain the reasoning of the steps that allow you ..
In a car lift, the output plunger has a radius of 9cm. the weight of the plunger and the car is 21600N. What is the gauge pressure of the hydraulic oil used in the operating lift.
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