A 16kg object is dropped from a height of 25m and strikes the ground with a speed of 18m/s. What is the average air drag force on an object?
Q: A truck’s brakes can overheat and fail while descending mountain highways, leading to an extremely…
A: According to the Work-Energy Theorem, Work done by non-conservative force = Change in total…
Q: Training is over, and the zombie apocalypse is upon us. You are at the top of a 50-m-high hill. A…
A: The velocity of the car at the bottom of the hill is:
Q: Novice piano movers have pushed a 1000 kg piano to a second-story window. They plan to open the…
A:
Q: A tennis ball is thrown at 25 m/s on a day when the wind speed is 0 m/s. What is the drag force…
A:
Q: An airplane is flying horizontally above the ground at a altitude of 1,966 m. Its forward velocity…
A: Given:Dropping height of the package (h) = 1966 mAs the airplane moving in horizontal direction…
Q: A 250g PASCar drags a sliding tray of 50g on the track. The kinetic friction coefficient between the…
A:
Q: A driver in a 2290-kg car car traveling at 42.7 m/s slams on the brakes and skids to a stop. If the…
A:
Q: A spring-loaded device imparts an initial vertical velocity of 49 m/s to a 0.10-kg ball. The drag…
A: Given information: The mass of the ball (m) = 0.10 kg The initial velocity of the ball (v0) = 49 m/s…
Q: The 50-kg box has an initial speed of 7 m/s along the floor. The coefficient of kinetic friction is…
A: Given, Mass of box (m)= 50 kg Initial speed of box ( vo) =(u) = 7m/s Coefficient of friction (µk)…
Q: ŁOne non-powered sled is sliding over a snowed surface, first down from the top of Rat and inclined…
A: Given: The inclination of the plane surface with horizontal is 45 degrees The top of the inclined…
Q: The kinetic friction force between a 8.1-kg object and a horizontal surface is 72 N. If the initial…
A:
Q: How far will a 75 kg skier traveling at 20 m/s go up a 100 incline that has a coefficient of…
A: Given Mass m = 75 kg initial speed u = 20 m/s θ =10⁰ Coefficient of friction μ = 0.05
Q: A car is moving at 50 mph initially on the road, then the engine suddenly shut down and the car…
A: Given Data:- Initial speed of the car is v0=50 mph =50×1 mi1 h×1609 m1 mi×1 h60 min×1 min60 s…
Q: A dart of a mass of 20 g hits a target while traveling horizontally with a velocity of 5 m/s. The…
A: The mass of the dart ,m=20 g=20×10-3 kg The initial velocity of the dart u=5 m/s The distance…
Q: A 3500lb car decelerates from 60mph to 45mph in 8 seconds. Neglecting friction, what is the average…
A:
Q: A 480g falcon can reach high speeds near the ground after vertically diving from heights approaching…
A:
Q: Bob drives a 3500kg truck off a cliff at an initial speed of 11m/s. The truck hit the bottom of the…
A: Given in question - Mass of truck(m) = 3500 KgInitial speed(u) = 11 m/sFinal speed(v) = 18 m/sTo…
Q: How fast will the wagon accelerate
A: Here we use Newtonian equation of motion.
Q: A 100 kg skier starts from rest at the top of a ski slope that is 50 m long. If his final speed at…
A:
Q: A skater starts from rest at the top of a frictionless hill that is inclined at 12⁰ with the…
A: Given : coefficient of friction between snow and skis, μ = 0.125 angle of inclination,…
Q: A stone with a weight of 5.34 N is launched vertically from ground level with an initial speed of…
A:
Q: An experiment is conducted where a metal ramp is placed on a level surface, with the ramp’s surface…
A: Given:- The mass of the block is m = 1.0 kg The initial height of the block is h = 3 m The angle…
Q: A skier starts going down a rocky hill that is inclined 30 degrees from the horizontal. It is 2 km…
A:
Q: Does the escape speed for an object at the earth’s surface depend on the direction in which it is…
A: The angle of launch of the spacecraft does not effect the escape velocity of the object. Whatever…
Q: A hockey puck with mass 0.166 kg is pushed across the ice with a constant force of 0.89 N. The…
A:
Q: A 13 gg plastic ball is thrown horizontally at 15 m/sm/s from xx = 0 mm. It experiences an…
A: Given that, Drag force, Fx = - 2×10-3 N/m Mass of the ball m = 13 g =…
Q: A person starts from rest at the top of a large frictionless spherical surface, and slides into the…
A:
Q: A girl on a skateboard (total mass of 40 kg) is moving at a speed of 10 m/s at the bottom of a long…
A: We have to determine the net frictional force on the girl We know the combined mass of the…
Q: A 149-g baseball is dropped from a tree 15.0 m above the ground. a) With what speed would it hit…
A: M = 150g = 0.15kg H = 15.0m Initial velocity, u = 0 Acceleration, g = 10m/s2
Q: A car traveling at 22 m/s runs out of gas while traveling up a 200 slope. How far up the hill will…
A: The total mechanical energy of the car must be conserved. Take the initial point as the starting…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
- You are participating in the Iditarod, and your sled dogs are pulling you across a frozen lake with a force of 1200 N while a 300 N wind is blowing at you at 135 degrees from your direction of travel. What is the net force, and will your kinetic energy increase or decrease?Three identical balls (ball 1, ball 2, and ball 3) are thrown at the same speed from the top of the same building. Ball 1 is thrown downward at 45 ° below the horizontal, ball 2 is thrown horizontally, and ball 3 is thrown upward at 45 ° above the horizontal. Which ball is going fastest just before it hits the level ground below the building (i.e., has the largest impact speed)? Assume air drag on the balls is negligible.You and your friends pull your car off a mountain road onto an overlook to take pictures of the frozen lake below. You lose your footing on the packed snow, fall over the cliff, and land in a soft snow bank on a ledge, 10 feet below the edge. The cliff's wall is too smooth to climb upwards and too steep and dangerous to climb the remaining 300 feet to the bottom. While trying to think your way out of your predicament, you realize one reason you had slipped was that you had misjudged how the cliff sloped towards the edge (a decline of about 5-10 degrees). There is nothing near the edge to which your friends can tie a rope, and they fear the footing is too slippery for them to pull you to the top. However, they can get the car close enough to the edge to tie the rope to the bumper and hang it over the edge. You are worried, however, that the car might slip over the edge as well. On your phone (which has survived the fall) you look up the coefficient of static friction of snow tires on…
- a tire swing is hanging from a rope of the length 5 meters long. It swings from an initial angle of 30 degrees relative to the vertical. The mass of the tire is 19k. what is the maximum tensionA 547g squirrel with a frontal surface area of 0.0145m2 falls to the ground from a 5.3m tree. Assume the density of air is 1.21kg/m3. Neglecting the drag force, what is the velocity, in meters per second, of a 56kg person after falling, from rest, by that same distance?A two-man bobsled has a mass of 290 kg. Starting from rest, the two racers push the sled for the first 50 m with a net force of 370 N. Neglecting friction, what is the sled's speed at the end of the 50 m? 7.8 m/s 2.9 m/s 11.3 m/s 8.9 m/s 4.7 m/s
- A girl on a skateboard (total mass of 33.6 kg) is moving at a speed of 12.0 m/s at the bottom of a long ramp. The ramp is inclined at 23° with respect to the horizontal. If she travels 14.1 m upward along the ramp before stopping, what is the net frictional force on her?A stone with a weight of 5.41 N is launched vertically from ground level with an initial speed of 21.0 m/s, and the air drag on it is 0.263 N throughout the flight. What are (a) the maximum height reached by the stone and (b) its speed just before it hits the ground? (a) Number i Units (b) Number Units