A projectile returns to its original height after 408

Assignment Help Physics

Reference no: EM13616533

Q1. A rock is thrown directly upward from the edge of the roof of a building that is 50 m meters tall. The rock misses the building on its way down, and is observed to strike the ground 4.00 seconds after being thrown. Take the g the acceleration due to gravity is magnitude 9.80 m/s2 and neglect any effects of air resistance. What speed was the initial speed of the rock?

Q2. A package is dropped from a helicopter moving upward at 15 m/s. If it takes 16s before the package strikes the ground, the acceleration of gravity g = 9.8m/cm2 downward.

(a) How high above the ground was the package when it was released? Neglect air resistance.

Q3. A child sits on a merry-go-round, 1.5 meters from the center. The merry-go-round is in UCM uniform circular motion turning at a constant angular speed, the child is observed to have a radial (centripetal) acceleration of 2.4 m/s² at this distance from the axis.

(a) Detemine the angular speed in radian/sec, then

(b) Determine how long does it take for the merry-go-round to make one revolution?

Q4. A stone is thrown upward with initial velocity 7.50 m/s at an angle of 42.0° above the horizontal from the upper edge of a cliff, and it hits the ground 1.50 s.

(a) Find the x and y components Vx and Vy of its velocity V just before it reaches the gound at t=1.5 s

(b) Then determine the magnitude Vof its velocity vector V just as it reaches the ground.

Q5. A projectile returns to its original height after 4.08 seconds, during which time it travels 76.2 meters horizontally. Determine what was the projectile's initial speed? (Use g = 9.80 m/s²)

Reference no: EM13616533

Questions Cloud

On june 14 2005 asafa powell of jamaica set a worlds record : on june 14 2005 asafa powell of jamaica set a worlds record for the 100-m dash with a time t 9.77 s. assuming he

Starting with 2000 on march 3 you deposit 500 23 days from : 1. you take a 5000 loan with an interest rate of 10 and pay off a constant principal portion of 200 every year. use the

If a speed of 40 is required for takeoff what minimum : a transport plane takes off from a level landing field with two gliders in tow one behind the other. the mass of each

I asset xs value follows a natural exponential function x : 1. an asset xs value follows a natural exponential function x et and an asset ys value follows y e2t-1 where t is the

A projectile returns to its original height after 408 : q1. a rock is thrown directly upward from the edge of the roof of a building that is 50 m meters tall. the rock misses

An assets value was 1439 7 days ago if the assets value has : 1. suppose that a stocks price is 48 at the end of day 1. if the price of the stock increases by 30 during day 2 20

The lifetime in hours of a certain kind of radio tube is a : the lifetime in hours of a certain kind of radio tube is a random variable with the probability density function given

What is the probability that the cost of the damaged food : a refrigerated delivery truck has a load of perishable goods worth 10000. if the refrigeration unit is not cold enough

If the company buys x minutes of television advertising and : a company is planning to spend up to 10000 on advertising. it costs 3000 per minute to advertise on television and 1000

User Account

All Pages