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8.4 Car #1 is going 50 mi/h when it crashes into a stationary...
A car traveling at 35 mi/h crashes into a tree. The front end of the car...
A car traveling at 35 mi/h crashes into a tree. The front end of the car compresses and the driver comes to rest after traveling 0.75 m. What was the magnitude of the average acceleration of the driver during the collision? Express your answer in terms of "gs", where 1g 9.80 m/s. Determine the time interval of the collision, in milliseconds. 6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from rest from the...
please need these answered clearly and correctly please, need it them done just quick to pass...
please need these answered clearly and correctly please, need it
them done just quick to pass my class by tonight, questions
3-5
M i ques more work: Stretching a stiff spring a certain distance or stretching a weak spring the same distance? Defend your answer. - Stretching a stiff spring. This is simply because a stiff spring is more resistant to movement which requires more force or work to move it. 3. An object that has a small mass and...
1. A car is traveling south at 25 mi/hr (11.4 m/s). A truck having four times...
1. A car is traveling south at 25 mi/hr (11.4 m/s). A truck having four times the mass of the car is traveling east at 50 mi/hr (22.7 m/s). How many times greater is is the trucks kinetic energy compared to the cars kinetic energy? explain your reasoning. 2. A car having a mass of 1900 kg strikes a smooth, rigid post with an initial speed of 8.3 m/s. the sign does not mover but the bumper of the car...
Multiple Choice. Select the best option. You do not need to show your work. S Two...
Multiple Choice. Select the best option. You do not need to show your work. S Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel can push for 5.0 min onger. Compare the work they do. A) Both men do positive work, but Joel does 75% more work than Jerry. B) Both men do positive work, but Joel does 50% more work than Jerry C) Both men do positive work, but Jerry does 50%...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
Please HELP Reading: Chapter 15 A car is going down a hill and is also slowing down as it appro...
Please HELP Reading: Chapter 15 A car is going down a hill and is also slowing down as it approaches a stop sign. How is the car’s potential energy changing? How is the car’s kinetic energy changing? To what other form does energy go? Explain your answers. Which has the greater amount of internal energy, an iceberg or a cup of hot coffee? Defend your answer. Consider two glasses, one filled with water and the other half full, with the...
1. During World War I, Germany used a "Big Bertha" cannon to hurl shells into Paris...
1. During World War I, Germany used a "Big Bertha" cannon to hurl shells into Paris 30 miles away. This gun also had a long barrel. What is the reason for using a long barrel in these guns? 2. Consider two less-than-desirable options. In the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. In the second option you are driving 30 mph and crash head-on into a stationary brick wall. In...
1. Is it possible for a system to have negative gravitational potential energy? a) Yes, as...
1. Is it possible for a system to have negative gravitational potential energy? a) Yes, as long as the kinetic energy is positive. b) Yes, as long as the total energy is positive. c) Yes, since the choice of zero of gravitational potential energy is arbitrary. d) No, because the kinetic energy of a system must equal its gravitational potential energy. e) No, because you can't have negative energy. 2. In an isolated system, for which of the following types...
do all please. 1. A 20 Kg cart moving at 10 m/s collides with a 10...
do
all please.
1. A 20 Kg cart moving at 10 m/s collides with a 10 Kg cart moving at 20 m/ s. The two carts stick to each other after the collision. Calculate the final speed of the carts just after the collision if () They were moving in the same direction direction (i.e. thefaster bumped the slower from behind) (ii) They were moving at 90° respect to each other. (ii) They were moving at 30° respect to each...
PHYS 110 Lab #6 Wrap up question 1: Say the car in Collision B (1000 kg,...
PHYS 110 Lab #6 Wrap up question 1: Say the car in Collision B (1000 kg, 100 mph) takes 0.2 seconds to come to a stop rather than 0.1 s. Would you expect the damage to be the same as before, or would it be less? Justify your answer with a force comparison. Wrap up question 2: Using your energy numbers from your measurements, explain why the impact of the 100 mph car is more than twice as bad in...
A car traveling at 35 mi/h crashes into a tree. The front end of the car compresses and the driver comes to rest after traveling 0.75 m. What was the magnitude of the average acceleration of the driver during the collision? Express your answer in terms of "gs", where 1g 9.80 m/s. Determine the time interval of the collision, in milliseconds. 6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from rest from the...
please need these answered clearly and correctly please, need it
them done just quick to pass my class by tonight, questions
3-5
M i ques more work: Stretching a stiff spring a certain distance or stretching a weak spring the same distance? Defend your answer. - Stretching a stiff spring. This is simply because a stiff spring is more resistant to movement which requires more force or work to move it. 3. An object that has a small mass and...
Multiple Choice. Select the best option. You do not need to show your work. S Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel can push for 5.0 min onger. Compare the work they do. A) Both men do positive work, but Joel does 75% more work than Jerry. B) Both men do positive work, but Joel does 50% more work than Jerry C) Both men do positive work, but Jerry does 50%...
do
all please.
1. A 20 Kg cart moving at 10 m/s collides with a 10 Kg cart moving at 20 m/ s. The two carts stick to each other after the collision. Calculate the final speed of the carts just after the collision if () They were moving in the same direction direction (i.e. thefaster bumped the slower from behind) (ii) They were moving at 90° respect to each other. (ii) They were moving at 30° respect to each...
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