Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.50 m/s, and the second a velocity of 4.25 m/s. What is the velocity of the second runner relative to the first?
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- Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.45 m/s, and the second a velocity of 4.25 m/s. (a) What is the velocity of the second runner relative to the first? (Enter a number. Enter your answer in m/s faster than the front runner.) m/s faster than the front runner (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? The second runner will win.The first runner will win. (c) What distance (in m) ahead will the winner be when she crosses the finish line? (Enter a number.) mNear the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.45 m/s, and the second a velocity of 4.20 m/s. (a) What is the velocity of the second runner relative to the first? (Enter a number. Enter your answer in m/s faster than the front runner.) m/s faster than the front runner (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? O The first runner will win. O The second runner will win. (c) What distance (in m) ahead will the winner be when she crosses the finish line? (Enter a number.) mYou throw an object directly up into the air and then catch it when it comes back down. It hits your hand at a speed of 7 m/s on the way down. What was the initial velocity of the ball? Use a kinematic approach.
- A man who is on top of a roof of a high building drops a piece of metallic material. A second piece of metallic material is dropped 3.0 seconds later. How far apart (km) are the materials when the second material has reached a speed of 15.0 m/sNear the end of a marathon race, the first two runners are separated by a distance of 65.0 m. The front runner has a velocity of 3.25 m/s, and the second runner has a velocity of 4.75 m/s. What is the magnitude of the velocity of the second runner relative to the first? velocity of the second runner relative to the first: ? If the front runner is 215 m from the finish line, who will win the race, assuming both runners run at constant velocity? a) front runner b) Both runners cross the finish line at the same time. c) second runner By what distance does the winning runner finish ahead of the next runner? distance: ?Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.45 m/s, and the second a velocity of 4.20 m/s. (a) What is the velocity (in m/s) of the second runner relative to the first? ? m/s faster than the front runner (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? The first runner will win? The second runner will win? (c) What distance (in m) ahead will the winner be when she crosses the finish line?
- Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.50 m/s, and the second a velocity of 4.25 m/s. (a) What is the velocity of the second runner relative to the first? m/s faster than the front runner. (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? O The second runner will win. O The first runner will win. (c) What distance ahead will the winner be when she crosses the finish line? Additional Materials O ReadingAn inquisitive physics student and mountain climber climbs a 51.0-m-high cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.06 m/s. (b) What initial velocity must the second stone have if the two stones are to hit the water simultaneously?hits the ball and gives it a velocity of 51 m/s to the north. the ball during the 1.0 x 10-³s when it was in contact with the bat? Ans: 9.4 x 104 m/s² north 30rb Question 6. Suppose a car is traveling at + 22.5 m/s, and the driver sees a traffic light turn red. After 0.401 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 4.00 m/s². What is the stopping distance of the car, as measured from the point where the driver first notices the red light? Ans: 72.3 m 81 to mort 35 bu do add asid Hed T the instant
- Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.50 m/s, and the second a velocity of 4.20 m/s. (a) What is the velocity of the second runner relative to the first? m/s faster than the front runner. (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? The second runner will win. The first runner will win. (c) What distance ahead will the winner be when she crosses the finish line? mA cat is sleeping on the floor in the middle of a 3.0 m wide room when a barking dog enters with a speed of 1.50 m/s. As the dog enters, the cat immediately accelerates at 0.85 m/s2 toward an open window on the opposite side of the room. The dog is a bit startled by the cat and begins to slow down at 0.10 m/s2 as soon as it enters the room. How far is the cat in front of the dog as it leaps through the window?A student throws a set of keys vertically upward to her sorority sister, who is in a window 2.90 m above. The second student catches the keys 2.60 s later. (a) With what initial velocity were the keys thrown? magnitude 8.37 x m/s direction up (b) What was the velocity of the keys just before they were caught? magnitude 4.37 x m/s direction down