A bird is flying due east, its distance from a tall building is given by x(t)= 32.0 + (11.1 m/s)t - (0.0350)t^3  what is the instantenous velocity when t=8.00?  i have tried this and have gotten 8.86 in which the program tells me that is incorrect...

Can you use these velocity components, together with y and a = 9.8m / (s ^ 2) to obtain the time of flight, t? Write the expression. Hint: x = vot and replace t using y = 1/2 * g * t ^ 2

Needs Complete typed solution with 100 % accuracy.

Needs Complete solution with 100 % accuracy.

You throw a rock from the upper edge of a 85.0-m vertical dam with a speed of 28.0 m/s at 65.0° above the horizon. 1) How long after throwing the rock will you see it hit the water? (Neglect any effects due to air resistance.) (Express your answer to three significant figures.) Submit S 2) How far from the bottom of the dam does the rock land? (Neglect any effects due to air resistance.) (Express your answer to three significant figures.) Submit m

Please answer the following, thank you!

a ball is thrown straight up in the air , initial velocity, vi = 2.5 m/s y. How long does it take the ball to reach its peak height, delta t peak? What is the ball's peak height, h peak.

A ball is thrown off the top of a 30m cliff with horizontal velocity of 10 m/s. How far from the base of the cliff does the ball land? Express answer in meters.

Bob has just finished climbing a sheer cliff above a level beach and wants to figure out how high he climbed. All he has to use is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher and knows that the fastest he can throw the ball is about vo = 33.7 m/s. Bob starts the stopwatch as he throws the ball, with no way to measure the ball's initial trajectory, and watches carefully. The ball rises and then falls, and after t₁ = 0.710 s the ball is once again level with Bob. Bob cannot see well enough to time when the ball hits the ground. Bob's friend then measures that the ball hit the ground x = 123 m from the base of the cliff. How high above the beach was the ball when it was thrown? initial height: X 1₁ m

Your bow can fire arrows at 70 ??. You shoot an arrow straight up into the air. After 1 second, you shoot anotherarrow into the air.a) If you are shooting the arrows from 2 m above the ground, how far above the ground do the arrowscollide? (Answer: 251 m)