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PhysicsQ&A LibraryReview | 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 remainingPPearsonQuestion

Asked Nov 22, 2019

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Q: Part D

A: d)The velocity is,