A stone is thrown vertically upward with a speed of 15.5 m/s from the edge of a cliff 75.0 m high (Fig. 2–48). (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance -y = 0 did it travel? FIGURE 2-48 Ey= -75 m Problem 71.

Q: say a cars average speed is 15.2 km, how many meters can these cars go in 5.50s, 6.70s, and 6.78s

A: Given Car speed = 15.2 km/h We have to calculate distance moved by the car in 5.50s, 6.70s, and…

Q: (a) Calculate the height of a cliff if it takes 2 s for a rock that falls off the cliff to hit the…

A:

Q: (a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a…

A: Given data:  Initial velocity (u) = 0 m/s Final velocity (v) = 7.11 m/s Time (t) = 2.53 s Required:…

Q: Can the instantaneous speed of an object ever be greater than its average speed?

A: Yes, the instantaneous speed of an object can be greater than its average speed.

Q: The fastest commercially available rifle bulletclaims a muzzle velocity of 4225 ft>s. (a) What is…

A:

Q: aren't you supposed to substract toms speed by emilys speed to 1.5min / 90sec so 500/(x+0.8) -…

A: Since speed is inversely proportional to time, the higher the speed the less time it will take.In…

Q: If a half marathon is 13 1 miles ,how long will ít take for a runner to Complete the distance…

A: Given: The distance of the half marathon is 13.1 miles. The average rape of rinning is 5 minutes and…

Q: e height, in feet, of an object shot upwards into the air with an initial velocity, in feet per…

A: All directions upwards must be considered positive and downwards as negative.

Q: (II) Two locomotives approach each other on parallel tracks. Each has a speed of 155 km/h with…

A: Given data:  Locomotives approach each other Speed of each locomotive (v) = 155 km/h Distance…

Q: At the edge of a 12 -m-tall building, two children throw rocks at 10 m/s, one upward and one…

A: During the upward motion, we take the value of the acceleration of the rock as negative and during…

Q: 6. A car is headed into town along a straight highway (x-0m is the center of town), and its position…

A: Given data: Car is headed into the town along a straight highway. x=0 is the center of town.…

Q: 14) If an object is thrown upward with an initial velocity of 80 ft/sec, its height after t sec is…

A:

Q: Two airplanes leave an airport at the same time. The velocity of the first airplane is 680 m/h at a…

A:

Q: (a) How long would it take an object to fall 100m on the moon (g = 1.6m/s/s) if dropped from rest?…

A: Given Data: The height of fall is, s=100 m The acceleration due to gravity on the moon is, g=1.6…

Q: bag is thrown vertically upwards, it takes 1.02 s to reach the highest point, with what speed is it…

A: Using equation of motion we can solve this problem

Q: The cannon on a battleship can fire a shell a maximum distance of 21.6 km.   (a) Calculate the…

A: