Review | ConstantsIn the latest Indian Jones film, Indy is supposed tothrow a grenade from his car, which is going 85.0km/h , to his enemy's car, which is going 115km/h .The enemy's car is 13.9 m in front of theIndy's when he lets go of the grenade.Part AIf Indy throws the grenade so its initial velocity relative to him is at an angle of 45° above the horizontal,what should the magnitude of the initial velocity be? The cars are both traveling in the same direction on alevel road. You can ignore air resistance.Hint: The grenade moves in projectile motion, and convert the two velocities given in the problem fromkm/hr to m/s. Being an excellent student of P2, Indy knows that horizontal range of the grenade must equalthe distance that the enemies car is ahead at the time the grenade is thrown plus the distance the enemiescar travels while the grenade is in the air. This distance is given by v_rel*t, where v_rel the relative velocity ofthe enemies car relative to the Indy's and t is the time in the air.Solve for time that the grenade is in the air in terms of v_0.Use the range equation to get the grenade distance as a function of v_0Set R-(initial separation)+v_rel*t and get a 2nd order polynomial for v_0. Use quadratic equation to getv_0. This is the magnitude of the velocity vector relative to Indy.km/hVo 68.3Shift+WinPrevious AnswersSubmitAll attempts used; correct answer displayedP Pearson Review ConstantsIn the latest Indian Jones film, Indy is supposed tothrow a grenade from his car, which is going 85.0km/h , to his enemy's car, which is going 115km/h . The enemy's car is 13.9 m in front of theIndy's when he lets go of the grenade.All attempts used; correct answer displayedPart BFind the magnitude of the velocity relative to the earthHint: Use Galileo's equation where Frame A is ground, Frame B is Indy's car and the object of interest P isthe granade.Use your answer in part A for speed and given direction to calculate the x and y components of the velocitywith respect to Indy's car. The velocity of Indy's car with respect to the ground is straightforward to write in xand y componentsΑΣφ?86.56km/hPrevious AnswersRequest AnswerSubmitX Incorrect; Try Again; 5 attempts remainingPPearson

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Part B please

Review | Constants
In the latest Indian Jones film, Indy is supposed to
throw a grenade from his car, which is going 85.0
km/h , to his enemy's car, which is going 115
km/h .The enemy's car is 13.9 m in front of the
Indy's when he lets go of the grenade.
Part A
If Indy throws the grenade so its initial velocity relative to him is at an angle of 45° above the horizontal,
what should the magnitude of the initial velocity be? The cars are both traveling in the same direction on a
level road. You can ignore air resistance.
Hint: The grenade moves in projectile motion, and convert the two velocities given in the problem from
km/hr to m/s. Being an excellent student of P2, Indy knows that horizontal range of the grenade must equal
the distance that the enemies car is ahead at the time the grenade is thrown plus the distance the enemies
car travels while the grenade is in the air. This distance is given by v_rel*t, where v_rel the relative velocity of
the enemies car relative to the Indy's and t is the time in the air.
Solve for time that the grenade is in the air in terms of v_0.
Use the range equation to get the grenade distance as a function of v_0
Set R-(initial separation)+v_rel*t and get a 2nd order polynomial for v_0. Use quadratic equation to get
v_0. This is the magnitude of the velocity vector relative to Indy.
km/h
Vo 68.3
Shift+Win
Previous Answers
Submit
All attempts used; correct answer displayed
P Pearson
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Review | Constants In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 85.0 km/h , to his enemy's car, which is going 115 km/h .The enemy's car is 13.9 m in front of the Indy's when he lets go of the grenade. Part A If Indy throws the grenade so its initial velocity relative to him is at an angle of 45° above the horizontal, what should the magnitude of the initial velocity be? The cars are both traveling in the same direction on a level road. You can ignore air resistance. Hint: The grenade moves in projectile motion, and convert the two velocities given in the problem from km/hr to m/s. Being an excellent student of P2, Indy knows that horizontal range of the grenade must equal the distance that the enemies car is ahead at the time the grenade is thrown plus the distance the enemies car travels while the grenade is in the air. This distance is given by v_rel*t, where v_rel the relative velocity of the enemies car relative to the Indy's and t is the time in the air. Solve for time that the grenade is in the air in terms of v_0. Use the range equation to get the grenade distance as a function of v_0 Set R-(initial separation)+v_rel*t and get a 2nd order polynomial for v_0. Use quadratic equation to get v_0. This is the magnitude of the velocity vector relative to Indy. km/h Vo 68.3 Shift+Win Previous Answers Submit All attempts used; correct answer displayed P Pearson

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Review Constants
In the latest Indian Jones film, Indy is supposed to
throw a grenade from his car, which is going 85.0
km/h , to his enemy's car, which is going 115
km/h . The enemy's car is 13.9 m in front of the
Indy's when he lets go of the grenade.
All attempts used; correct answer displayed
Part B
Find the magnitude of the velocity relative to the earth
Hint: Use Galileo's equation where Frame A is ground, Frame B is Indy's car and the object of interest P is
the granade.
Use your answer in part A for speed and given direction to calculate the x and y components of the velocity
with respect to Indy's car. The velocity of Indy's car with respect to the ground is straightforward to write in x
and y components
ΑΣφ
?
86.56
km/h
Previous Answers
Request Answer
Submit
X Incorrect; Try Again; 5 attempts remaining
PPearson
help_outline

Image Transcriptionclose

Review Constants In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 85.0 km/h , to his enemy's car, which is going 115 km/h . The enemy's car is 13.9 m in front of the Indy's when he lets go of the grenade. All attempts used; correct answer displayed Part B Find the magnitude of the velocity relative to the earth Hint: Use Galileo's equation where Frame A is ground, Frame B is Indy's car and the object of interest P is the granade. Use your answer in part A for speed and given direction to calculate the x and y components of the velocity with respect to Indy's car. The velocity of Indy's car with respect to the ground is straightforward to write in x and y components ΑΣφ ? 86.56 km/h Previous Answers Request Answer Submit X Incorrect; Try Again; 5 attempts remaining PPearson

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