Problem 1 A motorist is cruising in their car at a constant speed of 25 m/s. Over the next 10 seconds, they accelerate at a constant rate until their speed is 30 m/s, then they stop accelerating and begin cruising at this new constant speed. How much distance do they cover while they're accelerating? Don't forget units!
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- For questions 2 & 3, use the following problem: An object moves on a straight line so that after t seconds its distance in millimeters (mm) from its original position is given by x(t) =1? – 2t. 2. Find the acceleration at t = 3: А. 1 mm/sec? В. 2 mm/sec? C. O mm/sec? D. 4 mm/sec? E. 6 mm/sec? F. None of these. 3. At what time does the object change direction? A. t=1 sec B. t=2 sec C. t= 0.5 sec D. t= 4 sec E. Never F. None of these.1. Jack drives a distance of 160 miles at an average speed of 35 miles/hr, followed by a distance of 190 miles at 75 miles/hr. What is his average speed over the 350-mile trip? Hint: Draw a labeled sketch of the trip. V avg miles per hour28. An auto manufacturer boasts that its newest sports car model "goes from 0 to 60 (mi/h) in 5.00 seconds!" a. What is the car's acceleration (in m/s²)? b. How far does it travel as it accelerates from 0.0 mi/h to 60.0 mi/h (in meters)? DM
- B. Solve the problems correctly. Present all solutions. 3. all Upiect ct: 5? 4. The brakes of a car moving at 14 m/s are applied, and the car comes to a stop in 4s. How far does the car go, while it is slowing down from 14 to 10 m/s? 5. The brakes of a car whose initial velocity is 30 m/s are applied, and the car receives an acceleration of -2 m/s². How far will it have gone (a) when its velocity has decreased to 15 m/s and (b) when it comes to a stop? 6. A car starts from rest and accelerates 10 m/s². (a) How far will it travel after 5 seconds? (b) How far will it travel during the sixth second?Hi I am in phyiscs I and it has the problem a runner ran the marathon (approx. 26.1) in 2 hours and 57 min. What was the average speed of the runner in m/s? I understand that I would have to divide the total distance by the total time, but I'm not sure how they changed the miles to meters. Please break it down so I can understand. I tried to solve it how you guys did it but I keep getting another answer. Thank you!1. Treat the motion of a particle which moves along the s-axis as shown. + 8, ft or m -1 1. 2. 3. The velocity of a particle is given by v where v is in meters per second and t is in seconds. 20r 120t + 25, Plot the velocity versus time graph for the first 10 seconds. Show the zero acceleration. b. Referring to Situation A, what is the velocity of the partidle when the acceleration becomes a. zero. Plot the acceleration versus time graph for the first 10 seconds. d. Describe the slope of the velocity and discuss its relationship to the acceleration of the particle. C.
- Hi I am in physics 1 and am trying to understand this problem. The problem saids a flea jumps vertically up at a speed of 2.1m/s. How high does it reach before it starts to fall back down? I found the seconds it takes to of how long it takes which was 0.21s. But I'm not sure of the distance. Please break this down and explain in detail. Thank you!Two sprinters start a race along a straight track at the same time and cross the finish line at the same time. a. Are their average velocities necessarily equal? Explain. b. Are their instantaneous velocities necessarily always equal? Explain. c. Are their final velocities necessarily equal? Explain.A swan on a lake gets airborne by flapping its wings and running on top of the water. (a) If the swan must reach a velocity of 6.00 m/s to take off and it accelerates from rest at an average rate of 0.35m/s2 , how far will it travel before becoming airborne? (b) How long does this take?
- Clay Matthews, a linebacker for the Green Bay Packers, can reach a speed of 10.0 m/s. At the start of a play, Matthews runs downfield at 45 with respect to the 50-yard line and covers 8.0 m in 1 s. He then fins straight down the field at 90 with respect to the 50-yard line for 12 m, with an elapsed time of 1.2 s. (a) What is Matthews’ final displacement from the start of the play? (b) What is his average velocity?Physics 30S Science & Technology 2240 Grant Ave. Winnipeg. MB R2C IL6 Shaflesbury High School Motion: Speed/Velocity & Acceleration Ad V = At a = Average Velocity, 1. A man jogs 5.0 km (5000 m) in 27 minutes. a) What is the time interval (At) in seconds? b) Calculate his average speed in metres per second (m/s). Average Acceleration, At 2. An object has a position of 13 metres west. 5.0 seconds later it's at 7 metres east. a) What was the initial position? b) What was the change of position or displacement (Ad)? c) What was the average velocity? 3. A world class sprinter runs 100.0 m in 8.90 s. What was his average speed? 4. A hiker gets lost in a forest. He walks half-way around a circle with a radius of 2.1 km in 2.0 hours. a) What distance did he walk? b) What was his average speed? c) What was his displacement? d) What was his average velocity? WE S C-2rr 5. A car has an average highway speed of 90 km/h or 25 m/s. At this speed; how long will it take to drive to Kenora which is 190…2. A cheetah moving in a constant acceleration covers the distance between two points 70.0m apart in 7.00s. Its speed as it passes the second point is 15.0m/s a. What is its speed at the first point? b. What is its acceleration?