A rock is dropped from a height of 256 ft and falls toward the earth in a straight line. In t seconds, the rock drops a distance of s = 16t^2 ft. Answer the following showing all work. a...
A rock is dropped from a height of 256 ft and falls toward the earth in a straight line. In t seconds, the rock drops a distance of s = 16t^2 ft. Answer the following showing all work. a...
an object is fired vertically upward with an initial velocity v(0) = v0 from an initial position s(0)=s0. Answer part A and B below. A. For v0=39.2m/s and s0=27m find the position...
A rock is dropped. Find its average velocity from t = 3 seconds to t = 5 seconds. (Enter feet/sec)
The missionary pilot flew his plane at the average spwe'd of 187 miles per hour for 11 hours. How far did he travel in that time period?
A boat travels for three hours with a current of 3 mph and then returns the same distance against the current in four hours. What is the boat's speed in four hours? How fast did the boat travel one...
if a crow flies into a headwind of 10m/s and the crow still achieves a relative velocity of 6m/s compared to the ground then what would his relative velocity be if that same wind where a tailwind...
If the current carried by a conductor is doubled what happens to a)the charge carrier density b)the current density c)the electron drift velocity d)the average...
A diver dives off the 10-meter platform into the swimming pool below. If her initial velocity is 5.5 m/s, what is her maximum height above the platform, and when will she hit the water?
A rifle bullet is fired vertically upwards with a muzzle velocity of 700 m/s. Assuming no air resistance, what height will it reach? How long will it take to reach the ground again?
A plane can fly 325 mph in still air. If it can fly 190 miles downwind in the same amount of time it can fly 135 miles upwind, find the velocity of the wind.
Time(seconds) .75 | 1.5 | 2 | 2.25 | 2.75 | 3.5 Height(feet) 108 | 119 | 116| 112 | 97 | 59 1. What type of function best models this data linear exponential quadratic or other...
A particle is moving with velocity v(t) = t^2 – 9t + 18 with distance, s measured in meters, left or right of zero, and t measured in seconds, with t between 0 and 8 seconds inclusive. The position...
A particle is moving with velocity v(t) = t^2 – 9t + 18 with distance, s measured in meters, left or right of zero, and t measured in seconds, with t between 0 and 8 seconds inclusive. The position...
If an object is thrown vertically upward with an initial velocity of v, from an originial position of s, the height h at any time t is given by h = -16t^2 +vt + s (where h and s...
Displacement is the distance between the starting position and final position. It is the change in position. This might seem easy enough but one thing about displacement is that it is the net change in position. Meaning it doesn't matter the path you took, all that matters are the initial and final locations. So if you ran around a jogging track, and ended in the same place you started, your... read more
Amy drove from Denver to boulder during rush hour at an average speed of 30mph and drove home at an average speed of 45mph. If the round trip took 1.75 hours, how far is it from Boulder to Denver...
a 2kg blob of putty moving at 3 m/s slams into a 2 kg of putty at rest. what is the initial momentum of the two blobs? what must be the final momentum of the two blobs? Also, calculate the velocity...
Calculate the minimum change in velocity (delta V or ?V) required for the Space Shuttle to decrease its altitude to 60 miles if it’s orbiting with an apogee of 236 miles and a perigee of 205 miles...
A train pulls away from a station with a constant acceleration of 0.37 m/s2. A passenger arrives at a point next to the track 6.1 s after the end of the train has passed the very same point. What...
The cheetah can run as fast as 113 km/h, the falcon can fly as fast as 161 km/h, and the sailfish can swim as fast as 105 km/h. The three of them run a relay with each covering a distance L at maximum...