S1. (5 pts) You climb a ladder to reach a height of 10 m from the...
S1. (5 pts) You climb a ladder to reach a height of 10 m from
the ground. If your mass is
100 kg, how much work did you do?
S2. (5 pts) You fell off that ladder in S1 reducing your
gravitational potential energy to
zero. What happened to your "lost" gravitational potential
energy?
S3. (5 pts) A rifle of mass 10.0 kg fires a bullet of mass 5.00
x 10-3 kg at 1,000 m/s. What is
the velocity of the recoil of the rifle into your shoulder?
S4. (5 pts) A scale has a spring constant k = 104 kg s-2. A
heavy statue is now put on the
scale that compresses its spring by Dx = 8 cm (= 8 x 10-2 m). How
much energy (kg m2 s-2)
is now stored in that spring?
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S1. (5 pts) You climb a ladder to reach a height of 10 m from
the...
An object has a kinetic energy of 234 J and a momentum of magnitude 29.0 kg...
An object has a kinetic energy of 234 J and a momentum of magnitude 29.0 kg · m/s. (a) Find the speed of the object. ____m/s (b) Find the mass of the object. ____kg A rifle with a weight of 20 N fires a 5.3-g bullet with a speed of 260 m/s. (a) Find the recoil speed of the rifle. m/s (b) If a 675-N man holds the rifle firmly against his shoulder, find the recoil speed of the man...
Suppose you climb the stairs of a ten-story building, about 30 m high, and your mass...
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Suppose you have a spring with a force constant of 42.5 N/m. How much is the...
Suppose you have a spring with a force constant of 42.5 N/m. How much is the spring stretched, in meters, by an object with a mass of 0.49 kg that is hanging from the spring at rest? Calculate the change in gravitational potential energy, in joules, of the 0.49-kg object when it descends this distance. Calculate the energy, in joules, stored in the spring when it is stretched this amount. Apparently, not all of the gravitational potential energy went into...
Question 2 10 pts A block of mass m = 4.0 kg is dropped from height...
Question 2 10 pts A block of mass m = 4.0 kg is dropped from height h = 74 cm onto a spring of spring constant k = 1530 N/m (See the figure below). Find the maximum distance the spring is compressed. (Your result must be in meters and include 2 digit after the decimal point. Maximum of 5% of error is accepted in your answer. Take g = 9.8 m/s 2.) pecccccee
Question 13 1 pts A stationary mass m - 1.3 kg is hanging from a spring...
Question 13 1 pts A stationary mass m - 1.3 kg is hanging from a spring of spring constant k - 1200 N/m. You raise the mass a distance of 10 cm above its equilibrium position. How much has the potential energy of the mass-spring system changed? 1.3 J 601 o 7.3J 12) 13)
Question 5 1 pts A horizontal spring with spring constant 30 N/m is compressed by 5...
Question 5 1 pts A horizontal spring with spring constant 30 N/m is compressed by 5 cm by a 10 gram mass. After the mass is released, it accelerates due to the potential energy of the spring. Use conservation of energy to determine what speed the 10 gram mass reaches after being pushed by the spring. Answer in units of m/s and round to 3 significant figures.
need help asap please show work 2a 6 pts) Use Newton's Universal Law of Gravitation to...
need help asap please show work
2a 6 pts) Use Newton's Universal Law of Gravitation to calculate the gravitational potential energy of an 80 kg astronaut standing on top of a 5-m ladder on the surface of Mars (mass of Mars is 6.4x10 kg and the radius of Mars is is 3400 km). b - 9 pts) If the astronaut steps off the ladder, what is his speed just before he lands on the surface of Mars?
You are asked to design a spring that will give a 1150 kgkg satellite a speed...
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6. A 2.00-kg rock is released from rest at a height of 30.0 m. Ignore air...
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On a warm spring day, the last icicle on the roof falls to the ground. The...
On a warm spring day, the last icicle on the roof falls to the ground. The icicle has a mass of 0.4 kg, and starts at a rest and a height of 6.9 m above the ground. A. What is the magnitude of the velocity of the icicle just before it hits the ground? Ignore air resistance. m/s B. Now, we will model the icicle hitting the ground as an object falling onto and then compressing a spring. (The small...
Question 2 10 pts A block of mass m = 4.0 kg is dropped from height h = 74 cm onto a spring of spring constant k = 1530 N/m (See the figure below). Find the maximum distance the spring is compressed. (Your result must be in meters and include 2 digit after the decimal point. Maximum of 5% of error is accepted in your answer. Take g = 9.8 m/s 2.) pecccccee
Question 13 1 pts A stationary mass m - 1.3 kg is hanging from a spring of spring constant k - 1200 N/m. You raise the mass a distance of 10 cm above its equilibrium position. How much has the potential energy of the mass-spring system changed? 1.3 J 601 o 7.3J 12) 13)
Question 5 1 pts A horizontal spring with spring constant 30 N/m is compressed by 5 cm by a 10 gram mass. After the mass is released, it accelerates due to the potential energy of the spring. Use conservation of energy to determine what speed the 10 gram mass reaches after being pushed by the spring. Answer in units of m/s and round to 3 significant figures.
need help asap please show work
2a 6 pts) Use Newton's Universal Law of Gravitation to calculate the gravitational potential energy of an 80 kg astronaut standing on top of a 5-m ladder on the surface of Mars (mass of Mars is 6.4x10 kg and the radius of Mars is is 3400 km). b - 9 pts) If the astronaut steps off the ladder, what is his speed just before he lands on the surface of Mars?
6. A 2.00-kg rock is released from rest at a height of 30.0 m. Ignore air resistance and determine (a) the kinetic energy at 30.0 m. (b) the gravitational potential energy at 30.0 m, (c) the total mechanical energy at 30.0 m, (d) the kinetic energy at 0 m, (e) the gravitational potential energy at 0 m, and (f) the total mechanical energy at 0 m. ( 6 pts,) A person in a kayak starts paddling, and it accelerates from...
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