An electric skateboarder is travelling west on a path along the river at 4m/s. A brisk walker on the other side of the riverbank is walking east along a path at 2m/s. The two paths are 40m apart. The skateboarder is initially 200m east of the walker. After 60 seconds, how fast is the distance between the skateboader and the walker changing?

Q: A swimmer who can consistently keep the same pace to cover 50 meters in 8.41 seconds sets out to…

A: Given: Speed of current of river vrg=2.94 m/s Swimmer maintain pace to cover 50 m. in 8.41 s.

Q: A stone is thrown from the roof of a building with a speed of 6 m/s. It is observed that the stone…

A:

Q: A spaceship is traveling at a velocity of v0 = (37.3 m/s)i when its rockets fire, giving it an…

A: Data Given ,  Initial velocity ( V0 ) = ( 37.3 i ) m/s Acceleration ( a ) = ( 2.55 i + 4.19 k ) m/s2…

Q: Tony stark happens to be standing beside thor as thor drops Mjolnir off of stark tower(425m). Tony…

A:

Q: A man stands on the top of a 725 m building and drops a coin from the top of the building. How fast…

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Q: A balloon is ascending at the rate of 14m/s14m/s at a height of 98m98m above the ground where a…

A:

Q: As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above…

A: Consider we drop a watermelon off the top of the empire state building having a height (h) above the…

Q: A simple pendulum, which has been given a small displacement, will perform simple harmonic motion.…

A: We have to find ratio of two pendulum length.

Q: Nathan is piloting a boat due south down the Murray River at a speed of 7.0m/s. At the same time…

A: The diagram showing the motion of the boats is given below. Take the north direction to be pointing…

Q: As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above…

A:

Q: You need to drive 69.7 km (43.3 miles) for an interview. The interview is at 11:15 am, you leave at…

A: The total distance to be covered is - D = 69.7 km , You decided to drive at 100 km /hr . Let's…

Q: While standing at the second floor balcony in an apartment building at 3 meters above the ground,…

A: height of second floor = y1 = 3 mheight of seventh floor = y2 = 12 minitial velocity = V0 = 17…

Q: A swimmer who can consistently keep the same pace to cover 50 meters in 7.71 seconds sets out to…

A: The height h=50m  Time t=7.71s  To find the actual speed of the swimmer

Q: hare and a tortoise are having a race along a 2.0km track. The tortoise sets off at a constant speed…

A: Length of track = 2000 mSpeed of tortoise = 1.6m/sSpeed of hare = 5m/s, 8m/s

Q: A person walks up a stalled 20 m long escalator in 80 s. When standing on the same escalator, now…

A: When the escalator is stalled, calculate the speed (v1).

Q: magnitude of discplacement for the whole trip

A: distance of groceries store = 2.62 km

Q: A spaceship is traveling at a velocity of v0 = (44.7 m/s)i when its rockets fire, giving it an…

A: Given:-  The initial velocity of the rocket is v0 = (44.7 m/s) i  The acceleration a = (3.34 m/s2)i…

Q: diver jumps from a boat and descends to a depth of 20m. she skirts a coral reef and estimates that…

A: diver jumps from a boat and descends to a depth of 20m. she skirts a coral reef and estimates that…

Q: two people start from the same point. one walks east at 5mi/h and the other walks north east at…

A:

Q: A stunt car traveling at 20 m/s flies horizontally off a cliff and lands 39.2 m from the base of the…

A: Given data:  Horizontal velocity (v0x) = 20 m/s Horizontal displacement (Δx) = 39.2 m Required:…

Q: runner and a cyclist compete in a race over a straight course 20 km long. The runner runs at a…

A:

Q: A single-engine air plain starts its engine at one end of the runway. It accelerates at a constant…

A: Given, velocity v=38 m/s time t=20 s

Q: At an air show, a jet plane has velocity components vx =695km/h and vy  =415km/h  at time 4.35 s and…

A: Given: The velocities are vx=695 km/h and vy =415 km/h at time 4.35 s and velocity vx'=938km/h and…

Q: = 4.1 ?

A:

Q: A police car is located 60 feet to the side of a straight road. A red car is driving along the road…

A:

Projectile Motion