A 15 kg boy falls out of his bed, a height of 0.50 m.  The amount of gravitational potential energy lost by the boy is:   Question 1 options:   A)  4.5 J   B)  7.5 J   C)  37 J   D)  74 J   E)  290 J

A 69.0-kg athlete leaps straight up into the air from a trampoline with an initial speed of 8.9 m/s. The goal of this problem is to find the maximum height she attains and her speed at half the maximum height a) what is the gravitational potential energy associated with the athlete

You push on a block of mass m a frictionless table from rest to a speed v in a time t. What is your average power output? a) – mv^2/2t b)+ mv^2/2t c) mv/t d) zero

Pilings are driven into the ground at a building site by dropping a 2150 kg object onto them. What change in gravitational potential energy does the object undergo if it is released from rest 20.0 m above the ground and ends up 1.90 m above the ground? change in gravitational potential energy: 318481.65 J Incorrect

Q10 The planet Saturn has a mass of 5.70 x 1026 kg and a diameter of 139820 km. A satellite in orbit around Saturn has a mass of 400 kg and is in orbit 1600 km above the surface of the planet. What is the gravitational potential energy of the satellite? (A) -1.98 x 10'l J (C) -2.13 x 10l J (B) -2.07 x 10!" j (D) 2.13 x 10"J

A 54 kg person climbs a set of stairs at a constant speed up a height of 3.4 m in 32 s. Calculate the gravitational potential energy at the top of the stairs.    a) 1.8 X 10² J   b) 5.3 X 10² J   c) 1.7 X 10³ J   d) 1.8 X 10³ J

Question 8 A 2 kg object is released from rest from a height of 3 m above Earth's surface. How much kinetic energy does the object have when it reaches a height of 1 m? A 25J B 10 J 20 J D 30 J E 40 J

i object 'A' with a mass of 4 kg is lifted vertically 4 m from the ground level; another object 'B' with a mass of 2 kg is lifted 8 mup. Which of the following statements is true? Object I has greater potential energy since it is heavier I. I. Object II has greater potential energy since it is lifted to a higher position II. Two objects have the same potential energy

▾ Part A A system of two objects has AKtot 7 J and AUnt=-3 J. = Vocals Search B N How much work is done by interaction forces? Express your answer in joules. Wint ΜΕ ΑΣΦ Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B How much work is done by external forces? Express your answer in joules. Wat ΜΕ ΑΣΦ Submit Request Answer Provide Feedback msi ENTER SHIFT ? J J NO.

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