1. David the shepherd boy faces Goliath thesoldier in a battle. The only weapon Davidhas is a slingshot that David uses has alength of 0.5m. The stone is to be releasedwith a veloxity of 10 m/s. In how manyrotations from rest must he swing theslingshot to achieve that velocity if thetangential acceleration is 5 meter persecond squared

The length of the slingshot l = 0.5 m The tangential acceleration of the slingshot is a = 5m/s2 When…

Answered: 1. David the shepherd boy faces Goliath…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter1: The Study Of Motion

Section: Chapter Questions

Problem 8C: A race car starts from rest on a circular track with radius 100 m and begins to increase its speed...

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Similar questions

Does a car moving around a circular track with constant speed have (a) zero acceleration, (b) an acceleration in the direction of its velocity, (c) an acceleration directed away from the center of its path, (d) an acceleration directed toward the center of its path, or (e) an acceleration with a direction that cannot be determined from the given information?
A father demonstrates projectile motion to his children by placing a pea on his forks handle and rapidly depressing the curved tines, launching the pea to heights above the dining room table. Suppose the pea is launched at 8.25 m/s at an angle of 75.0 above the table. With what speed does the pea strike the ceiling 2.00 in above the table?
An object is shot horizontally off a cliff which is 19.95 meters high. The forward speed when it is fired is 6.321. How far forward from the firing point does it land? (Your answer should be in meters, but don't write the unit; just the nuumber.) Use the acceleration due to gravity near the earth's surface, g=10m/s^2 (Remember that the horizontal and vetical motion can be treated seperately, so you can first find the time of flight, then figure out how far foward it moves in that time)
3- a rocket launched from a height h with initial velocity 100 m/s and it make angly 30 with the horizon , and its fall after 1000 m , what is the hight h and what is the flight time ?
A toy car drives around a circular track with a radius of 10 m. When the car’s velocity is instantaneously directed south, its acceleration is directed west at 10 m/s2 . When viewed from above, the car moves:
A runner completes one lap around a circular track with at a time of 352s at a constant speed of 3.9m/s. What was the runner's centripetal acceleration, in meters per squared second, during the run?
A girl on a bike takes 15 seconds to ride halfway aound a circular track of a radius=10. What is her average speed and magnitude of average velocity?
A fairground ride spins its occupants inside a flyingsaucer-shaped container. If the horizontal circular path theriders follow has an 8.00-m radius, at how manyrevolutions per minute are the riders subjected to acentripetal acceleration equal to that of gravity?
Plus and minus signs are used in one-dimensional motion to indicate direction. What is the sign of an acceleration that reduces the magnitude of a negative velocity? Of a positive velocity?
Give an example in which velocity is zero yet acceleration is not.
There is a distinction between average speed and the magnitude of average velocity. Give an example fiat illustrates the difference between these two quantities.
A basketball player is running at 5.00 m/s directly toward the basket when he jumps into the air to dunk the ball. He maintains his horizontal velocity. (a) What vertical velocity does he need to rise 0.750 m above the floor? (b) How far from the basket (measured in the horizontal direction) must he start his jump to reach his maximum height at the same time as he reaches the basket?

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