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An 1100 kg car is shifted into neutral and coasts down a 10 meter hill and...
5. A 1000-kg car is at the top of a hill as shown, where its elevation...
5. A 1000-kg car is at the top of a hill as shown, where its elevation above the bottom of the hill is 120 m. a. What is its gravitational potential energy? 120 m b. If the cart starts from rest and rolls down the hill with negligible friction and air resistance, what will its kinetic energy be when it reaches the bottom? c. What will be its speed when it reaches the bottom? Suppose instead that there is noticeable...
A car on a roller coaster starts at zero speed at an elevation above the ground...
A car on a roller coaster starts at zero speed at an elevation above the ground of 20.8 m. It coasts down a slope, and then climbs a hill. The top of the hill is at an elevation of 14.77 m. What is the speed, in m/s, of the car at the top of the hill? Neglect any frictional effects; g=9.80 m/s2. A projectile is shot from the surface of Earth by means of a very powerful cannon. If the...
1. A 4-meter plank weighing 8 kg is lying on a dock with 2.71 meters of...
1. A 4-meter plank weighing 8 kg is lying on a dock with 2.71 meters of its length on the dock, and the rest of its length extending off the dock. If a child weighing 61.2 kg walks out onto the part of the plank extending off the dock, what is the maximum distance in meters that the child can walk on the plank from the edge of the dock before he falls into the water? 2. A man pulls...
7-The 2000 kg car is moving at 10 m/s and has just run out of gas....
7-The 2000 kg car is moving at 10 m/s and has just run out of gas. The driver quickly shifts into neutral and hopes that he or she can roll to the gas station which is just over the next hill. Assuming negligible friction, under what condition will he make it? Back up your answer with a calculation and a brief explanation.
A 1500 kg car traveling at 19 m/s suddenly runs out of gas while approaching the...
A 1500 kg car traveling at 19 m/s suddenly runs out of gas while
approaching the valley shown in the figure(Figure 1). The alert
driver immediately puts the car in neutral so that it will roll.
What will be the car’s speed as it coasts into the gas station on
the other side of the valley? Express your answer to two
significant figures and include the appropriate units.
Gas station 15 m 10 m
Pam (60 kg) starts sliding doun a 50-meter-high hill with her snowboard (10 points). a) Find...
Pam (60 kg) starts sliding doun a 50-meter-high hill with her snowboard (10 points). a) Find her velocity when she reaches the bottom of the hill considering the coefficient of kinetic friction between the snowboard and the snow on the hill (the blue region) is 0.3 and the angle of the slope is 30 degrees(5 points) W) What should be minimum value of the coefficient of kinetic friction between the snowboard and the snow on the ground (the orange region)...
Joe Bruin owns a Nissan Leaf electric car, but he wants to make the car even...
Joe Bruin owns a Nissan Leaf electric car, but he wants to make the car even more “green” by installing solar cells on top of his electric car. Plus, in the event of a zombie apocalypse, Joe would like to be able to use his solar car to escape the zombies even after the electricity grid goes down. Joe’s car weighs 3500 lbs, and when the sun is shining overhead, the solar cells generate a total of 1000 watts of...
1. A roller coaster has a 300 kg car. Assume the track is frictionless. a) The...
1. A roller coaster has a 300 kg car. Assume the track is frictionless. a) The car starts at a speed 20 m/s on a horizontal track. It then goes through a circular loop. What is the speed of the car when it is at the top of the loop, h = 10 m above the horizontal track? b) What is the normal force applied from the track at the point? Does this force point upward or downward? Assume the...
just the answer please. no need for solution L Moving to another question will save this...
just the answer please. no need for solution
L Moving to another question will save this response. uestion 7 How much force is needed to make a rocket move in constant velocity in a frictionless outer space? the force needed is equal to its thrust Oe=mc2 O incomplete data given O Its equal to the net force acting in the object o nothing, just nothing A Moving to another question will save this response. L Moving to another question will...
Additional info: Meal = 1720 Kilocalories Mass of myself = 50 kg The Joule () is...
Additional info:
Meal = 1720 Kilocalories
Mass of myself = 50 kg
The Joule () is the SI unit of energy. (J = kg:m? S2 A calorie is another unit of energy. The definition of a calorie is the amount of heat (energy) necessary to raise the temperature of Ig of water by 1° Celsius. Ig of water occupies 1 milliliter (ml) = 1 cubic centimeter (cm) of volume. lkcal=4186J Energy comes in many forms and energy may be converted...
5. A 1000-kg car is at the top of a hill as shown, where its elevation above the bottom of the hill is 120 m. a. What is its gravitational potential energy? 120 m b. If the cart starts from rest and rolls down the hill with negligible friction and air resistance, what will its kinetic energy be when it reaches the bottom? c. What will be its speed when it reaches the bottom? Suppose instead that there is noticeable...
A 1500 kg car traveling at 19 m/s suddenly runs out of gas while
approaching the valley shown in the figure(Figure 1). The alert
driver immediately puts the car in neutral so that it will roll.
What will be the car’s speed as it coasts into the gas station on
the other side of the valley? Express your answer to two
significant figures and include the appropriate units.
Gas station 15 m 10 m
Pam (60 kg) starts sliding doun a 50-meter-high hill with her snowboard (10 points). a) Find her velocity when she reaches the bottom of the hill considering the coefficient of kinetic friction between the snowboard and the snow on the hill (the blue region) is 0.3 and the angle of the slope is 30 degrees(5 points) W) What should be minimum value of the coefficient of kinetic friction between the snowboard and the snow on the ground (the orange region)...
1. A roller coaster has a 300 kg car. Assume the track is frictionless. a) The car starts at a speed 20 m/s on a horizontal track. It then goes through a circular loop. What is the speed of the car when it is at the top of the loop, h = 10 m above the horizontal track? b) What is the normal force applied from the track at the point? Does this force point upward or downward? Assume the...
just the answer please. no need for solution
L Moving to another question will save this response. uestion 7 How much force is needed to make a rocket move in constant velocity in a frictionless outer space? the force needed is equal to its thrust Oe=mc2 O incomplete data given O Its equal to the net force acting in the object o nothing, just nothing A Moving to another question will save this response. L Moving to another question will...
Additional info:
Meal = 1720 Kilocalories
Mass of myself = 50 kg
The Joule () is the SI unit of energy. (J = kg:m? S2 A calorie is another unit of energy. The definition of a calorie is the amount of heat (energy) necessary to raise the temperature of Ig of water by 1° Celsius. Ig of water occupies 1 milliliter (ml) = 1 cubic centimeter (cm) of volume. lkcal=4186J Energy comes in many forms and energy may be converted...
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