Patrick is good runner that can sustain a speed of 15.5 m/s. He went to Laguna Lake and sat on a floating log. When Sandy passed by, he was scared and jumped off the log with a velocity of 15 m/s towards the other side. The log moved with a velocity of 3.8 m/s away from Patrick. If the mass of the log is 250 kg, what is Patrick’s mass

This is energy efficiency and the impulse momentum theorem. Can someone please show me how to compute this? With explanation and illustration/diagram please? Thank you. A.) Hogan is pushing an 800.0 kg car down the road, and it is going at 0.012 km/sec west. How much momentum does the car have?  B.) Napoles stopped at a traffic light when a 1280.5 kg car (including the driver) hits her from behind at 40.0 m/sec (Ouch!). If the other car ends up moving at 12 m/sec, and if she and her car have a mass of 940 kg, what is her final speed?

Pls help ASAP. Pls show all work and pls give direction and magnitude for all vectors.

Can a dot product ever be negative? Yes No   SubmitPrevious Answers  Correct Part B If yes, under what conditions? One of the vectors has negative length. The angle between two vectors is greater than 90 ∘∘. The angle between two vectors is less than 90 ∘∘.

Could you Please write clearly, thank you

3. DETAILS n mq MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You are working with a movie director and investigating a scene with a cowboy sliding off a tree limb and falling onto the saddle of a moving horse. The distance of the fall is several meters, and the calculation shows a high probability of injury to the cowboy from the stunt. Let's look at a simpler situation. Suppose the director asks you to have the cowboy step off a platform 2.95 m off the ground and land on his feet on the ground. The cowboy keeps his legs straight as he falls, but then bends at the knees as soon as he touches the ground. This allows the center of mass of his body to move through a distance of 0.660 m before his body comes to rest. (Center of mass will be formally defined in Linear Momentum and Collisions.) You assume this motion to be under constant acceleration of the center of mass of his body. To assess the degree of danger to the cowboy in this stunt, you wish to calculate the average force upward on…

Pls help ASAP. Pls show all work and pls give direction and magnitude for all vectors.

This is energy efficiency and the impulse momentum theorem. Can someone please show me how to compute this? With explanation and illustration/diagram please? Thank you. A) You are pushing a 10000.0 g box of dishes across the kitchen floor at a rate of 4.0 m/sec. What is its momentum?   B) Justine is standing on an ice rink when another skater hits him, imparting a force of 200.0 N for 0.20 seconds. If he has a mass of 90.0 kg, what is his final speed?   C) Kenny is driving a bumper car at EK at 18 m/sec, and he hits another car which is at rest. If he ends up going at 6.0 m/sec, what is the final speed of the other car, given that both cars have 100.0 kg mass, he has 80.0 kg mass, and the other person has a mass of 70.0 kg?

Two blocks are connected by a very light string passing over a massless and frictionless pulley (Figure 1). Traveling at constant speed, the 20.0 N block moves 80.0 cm to the right and the 12.0 N block moves 80.0 cm downward. Part E During this process, how much work is done on the 20.0 N block by friction? Express your answer with the appropriate units. HẢ ? Wf, 20.0 N = Value Units Figure 1 of 1 Submit Request Answer Part F 20.0 During this process, how much work is done on the 20.0 N block by the normal force? N Express your answer with the appropriate units. ? 12.0 N Wn, 20.0 N = Value Units

A 20.0-kg child descends a slide 1.80 m high and reaches the bottom with a speed of 1.25 m/s . Part A How much thermal energy due to friction was generated in this process? Express your answer to three significant figures and include the appropriate units.