A child runs with a speed of 7.00 m/s and jumps onto a 11.00kg sled initially at rest on a flat bed of snow (no friction). If the child and sled move together at a speed of 2.00 m/s after the child lands, what is the mass of the child? _____kg Suppose the child jumps off the sled before it runs into a snowbank. If the sled moves on its own with a velocity of 16.00 m/s then collides with the snowbank and comes to a stop in 0.38s, what is the magnitude of the average force exerted on the sled by the snowbank during the collision? _____N

A child runs with a speed of 7.00 m/s and jumps onto a 11.00kg sled initially at rest on a flat bed of snow (no friction). If the child and sled move together at a speed of 2.00 m/s after the child lands, what is the mass of the child? _kg Suppose the child jumps off the sled before it runs into a snowbank. If the sled moves on its own with a velocity of 16.00 m/s then collides with the snowbank and comes to a stop in 0.38s, what is the magnitude of the average force exerted on the sled by the snowbank during the collision? _N

Similar questions

One student pulls a car with 20 N to the East. Another student pulls the car with 30 N to the West. The car accelerates at 2 m/s² when the two students work together. What is the mass of the car (in kg)?
A car of mass 1670kg initially at a speed of 80 km/m crushes into a wall, if the accident lasted for 0.2 sec. what is the amount of force exerted in the car during the crash
An arrow hits a tree penetrating 10 cm as it is brought to rest from its initial speed of 50 m/s inside the tree. The arrows mass was 50 g. a) what average force did the tree exert on the arrow to bring it to rest?
A biker is traveling on level ground at 45.0 m/s with a combined mass of 315.0 kg. She spots a police officer 500 meters up ahead, so she applies the brakes, reducing her speed by half over a period of 14.0 seconds. In meters, how far does she travel during this time period? Answer: m
A student of mass 63 kg falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest at a time of 0.04 seconds. The average force exerted on him by the ground is 18,000 N, where the upward direction is taken to be a positive direction. From what height did the student fall? Assume that the only force acting on him during the collision is only due to the ground
A dump truck is being filled with sand. The sand falls straight downward from rest from a height of 1.06 m above the truck bed, and the mass of sand that hits the truck per second is 62.4 kg/s. The truck is parked on the platform of a weight scale. By how much does the scale reading exceed the weight of the truck and sand? Number i Units
A 2.0 kg object is moving to the right with a speed of 1.0 m/s when it experiences the force shown in the figure. What are the object’s speed and direction after the force ends? Express your answer to two significant figures and include the appropriate units. Enter positive value if the speed is directed to the right and negative value if the speed is directed to the left.
Please asap
Your friend is catching a falling basketball after it has passed through the basket. Her hands move straight down while catching the ball. It takes about 0.10 s for the player to lower her hands to stop the ball. Assume the mass of the ball is 0.60 kg, and that the ball has fallen a vertical distance of 1.2 m before reaching the player's hand. Determine the average force that her hands exert on the ball while catching it.
A Box of mass 1.2 kg is dropped from a window. the box starts from rest (inital speed 0). Immediately before hitting the ground the box has a speed of 34.34 m/s. It takes the boxs 0.017s for the box to come to rest after hitting the ground. What is the average net force on the box while it comes to rest. Round to the nearest whole number.
A 500-kg car traveling east at 30.0 m/s collides with an 800-kg truck traveling north at 20.0 m/s at an intersection. The two vehicles stuck together after the collision. The coefficient of sliding friction between both vehicles and the road is 0.300. Assume that the collision takes place on a level road. 1. Which of the following statements is FALSE? The kinetic energy of the system is not conserved during the collision. The friction between the vehicles and the road affects the motion of the vehicles after collision. The momentum of the car after the collision is equal to the vector sum of the momentum of the car before the collision and impulse exerted by the truck to the car during the collision. The final speed of the combined mass after the collision is equal to the sum of the initial speeds of the car and the truck. 3. Which of the following best approximates the magnitude of the IMPULSE EXERTED BY THE CAR TO THE TRUCK during the collision?