An aging coyote cannot run fast enough to catch a road-runner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s 2 (Fig. P1.78). The coyote starts at rest 70.0 in from the edge of a cliff at the instant the roadrunner zips past in the direction of the cliff, (a) Determine the minimum constant speed the roadrunner must have to reach the cliff before the coyote. At the edge of the cliff', the roadrunner escapes by making a sudden turn, while the coyote continues straight ahead. The coyote’s skates remain horizontal and continue to operate while he is in flight, so his acceleration while in the air ss (15.0 - 9.80 j → ) m/s 2 , (b) The cliff is 100 m above the flat floor of the desert. Determine how far from the base of the vertical cliff the coyote lands, (c) Determine the components of the coyote’s impact velocity.
An aging coyote cannot run fast enough to catch a road-runner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s 2 (Fig. P1.78). The coyote starts at rest 70.0 in from the edge of a cliff at the instant the roadrunner zips past in the direction of the cliff, (a) Determine the minimum constant speed the roadrunner must have to reach the cliff before the coyote. At the edge of the cliff', the roadrunner escapes by making a sudden turn, while the coyote continues straight ahead. The coyote’s skates remain horizontal and continue to operate while he is in flight, so his acceleration while in the air ss (15.0 - 9.80 j → ) m/s 2 , (b) The cliff is 100 m above the flat floor of the desert. Determine how far from the base of the vertical cliff the coyote lands, (c) Determine the components of the coyote’s impact velocity.
Solution Summary: The author determines the minimum constant speed required by the roadrunner to reach the cliff before the coyote.
An aging coyote cannot run fast enough to catch a road-runner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2 (Fig. P1.78). The coyote starts at rest 70.0 in from the edge of a cliff at the instant the roadrunner zips past in the direction of the cliff, (a) Determine the minimum constant speed the roadrunner must have to reach the cliff before the coyote. At the edge of the cliff', the roadrunner escapes by making a sudden turn, while the coyote continues straight ahead. The coyote’s skates remain horizontal and continue to operate while he is in flight, so his acceleration while in the air ss (15.0 - 9.80
j
→
) m/s2, (b) The cliff is 100 m above the flat floor of the desert. Determine how far from the base of the vertical cliff the coyote lands, (c) Determine the components of the coyote’s impact velocity.
A spaceship is traveling at a constant velocity of v(t) = 300.0i m/s when its rockets fire, giving it an acceleration of a(t) = (9.0i + 9.0k) m/s^2. What is its velocity (in m/s) 4 s after the rockets fire?
(Express your answer in vector form.)
A helicopter is ascending vertically with a speed of 5.30 m/s. At a height of 107 m above the Earth, a package is dropped from the helicopter.
How much time does it take for the package to reach the ground? [Hint: What is v0 for the package?]
Express your answer to three significant figures and include the appropriate units.
My Answer is that t= 4.163 but what unit is it?
I tried s, m/s, min but none of them were correct. PLEASE HELP CONFIRM MY ANSWER and THE UNIT along with 4.163
The coordinates (in meters) of a rabbit’s position as functions of time t (in seconds)are given by:x(t) = −3t2 + 4t − 2y(t) = 6t2 − 4t(a) What are the magnitude and direction of the instantaneous velocities at t = 0and t = 4 seconds?(b) Find the magnitude and direction of the acceleration of the rabbit at t = 1and t = 3 sec.
Chapter 4 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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