In a biathlon race, Murray must cycle 30 km and then run 20 km. Using v as his cycling speed and as his running speed, the correct simplified expression for the total time needed to complete the race will be:

Q: A car drives horizontally off the edge of a cliff that is 60.5 m high. The police at the scene of…

A:

Q: A suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other,…

A: Concept of Relative velocity: Let's assume velocity of an object "O" moving at velocity (V0) w.r.t…

Q: In 2015, a Japanese high-speed train set a record— traveling at 374 mph during a test run near Mt.…

A: Given speed  V=374 mph and 1 mile=1609 m=1.609 kilometres  since we know that 1 kilometres =1000…

Q: George walks to a friend’s house. He walks 750 meters North, then realizes he walked too far. He…

A: Given:George walks to a friend’s house. He walks 750 meters North, then realizes he walked too far.…

Q: 21. Mr. Alexander wants to know the height of a cliff he hiked up. He drops a rock from the top of…

A: Assume the height of the cliff is denoted by h. The initial velocity of the rock is u = 0 m/s.…

Q: Q20. An object is shot straight up from 10 m above ground level with an initial velocity of vo = 17…

A: Given:The initial height of the object: h=10 mThe initial velocity is given as: v0=17 m/s in the…

Q: 1. A bowling ball starts from rest and moves 300 m down the gutter in 22.4 seconds. a) What is its…

A: Given Data: The distance covered in the downward direction is: h=300 m The time taken to move down…

Q: . A ball is thrown downward from the top of a building with an initial speed of 8.9 m/s. If the ball…

A:

Q: In a 5000 m race, the athletes run 1212 laps; each lap is 400 m. Kara runs the race at a constant…

A: The total distance of the race, D=5000mEach lap distance = 400 mKara runs the race at a constant…

Q: A bicyclist rides the first 60 km of a 220 km race in 1.5 hours. What is the bicyclist average…

A:

Q: A ball is released from rest and begins to move on a friction-free ramp from a height of 12.0 m. The…

A: A ball is initially at rest.Initial height of ball is Final height of ball is Find:Velocity of ball…

Q: A car starts moving at 60 mi/hr. After some time, the car speed reduces to 40 mi/hr and stays there…

A: Let's denote the time the car moved at 60 mi/hr as t (in hours). Then, the time the car moved at 40…

Q: Problem 2: A car is traveling at a speed of 33 m/s. art (a) What is its speed in kilometers per…

A: Given:  Speed  of car            S=33 m/s   we  have  to find  S  in  Km/h

Q: An old commuter train travels a distance of 100 km from Union Station to Berkeley’s Crossing in the…

A: To determine,part ahow many hours does the trip take(t).given,speed(v)=45 mphdistance(d)=100…

Q: A stone is thrown vertically upward with a speed of 17.6 m/sm/s from the edge of a cliff 75.0 mm…

A:

Q: A student drops a water balloon out of a dorm window 26 m above the ground. What is its speed when…

A: As per guidelines I am answering only First question. For answers of remaining questions please post…

Q: 6. Consider the velocity-time graph shown below. Which section has the smallest v (m/s) 4 3 لی 2 1…

A: The velocity is a vector quantity. It has both magnitude and direction. The negative value of…

Q: To deter speeding through a residential area, the Police set up a speed trap on Illusion Drive.…

A: Given Speed limit is v= 30 mph=13.41 m/s Distance is d=50 m

Q: In Michael Johnson’s world-record 400 m sprint, he ran the first 100 m in 11.20 s; then he reached…

A: Given:total sprint, xtot = 400 malso he completed100m  in 11.20 s 200 m in 21.32 s300 m in 31.76…

Q: I need to understand the difference between scalar quantity and vector quantity. I need to come up…

A: Any describing the magnitude only, has not defined direction are SCALAR quantities. To apply any…

Q: The statement below describes a situation in which opposite quantities combine to make 0. Is the…

A: The displacement of the mountain biker when move from starting point to the halfway is d . When he…

Q: You are driving your car downtown from the beach, but you realize that you need to stop for food.…

A: Considering north direction to be upwards, west will be to the left of northSo, initially the person…

Q: top 2. I throw a ball down towards the ground from the of a tall building that is 11m high. The ball…

A:

Q: On a particularly busy workday, I might need to drive back and forth between ASUN’s Newport and…

A: Given: Distance between ASUN’s Newport and Jonesboro (d) = 38 miles. Time to taken to complete the…

Q: 5.The average person passes out at an acceleration of 7g (that is, seven times the gravitational…

A: The solution to both the questions is given by using basic relations of velocity, acceleration and…

Q: 27.) A penny is dropped from the top of a tall building. It falls 85 m to the ground. What is its…

A: Given The penny is dropped from the top of a building. Height of the building is h=85 m Initial…

Q: ง V₂ O m₂ m₁ Here v₁ = 40 mph. v₂ = 297 mph. m₁ = 15 oz. Then m2 is oz.

A:

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

A:

Q: A boy tosses a coin straight up to 2.2 m. Suppose the height when the coin leaves his hand is 1.3 m.…

A: Initial height of the coin in boy's hand = 1.3 m The height of the coin when it tosses = 2.2 m The…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –