4. The dragster stars from rest and travels along a straight track with an acceleration-deceleration described by the graph. Determine, (a) v in terms of s for 0ss<200 m and s>200 m, (b) the distance traveled before the dragster again comes to rest.
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- 3. A car travels along a straight line at a constant speed of 60.0 km/h for a distanced and then another distance d in the same direction at another constant speed. The average velocity for the entire trip is 30.0 km/h. (a) What is the constant speed with which the car moved during the second distance d? (b) Suppose the second distance d were traveled in the opposite direction, because the driver forgot something and had to return home (i). What would be the average velocity for this trip? (ii) What is the average speed for this new trip? 4. A particle is launched in the air with a velocity of 25 m/s at angle of 60° about the horizontal. Find the maximum horizontal range as well as the maximum height reached by the particle 5. The motion of a particle undergoing a uniformly accelerated motion is captured during each 2 seconds. It was observed that during the fourth and the tenth periods, the particle traveled 200 m and 500 m respectively. Determine: The acceleration of the particle 2.…Initially stationary, a train has a constant acceleration of 0.2 m/s². (a) What is its speed after 20 s? m/s (b) What is the total time required for the train to reach a speed of 28 m/s? SThe height of a helicopter above the ground is given by h = 3t^2+2.0t^4, where h is in meters and t is in seconds. At t=2.0s, the helicopter releases a small bag. a) Calculate the maximum height the bag reaches measured from the ground. b) How long after the bad is released, does it strike the ground? c) Calculate the speed of vag when it hits the ground.
- Please asap5 2 A small steel ball, dropped from rest, takes 0.50 s to fall through a vertical distance of 1.25 m. Determine (a) the average speed of the ball, AVO Speed=DIT = 1.25/0.5 = 2.5mls (b) the actual speed of the ball after it has fallen through a vertical distance of 1.25 m, assuming that the acceleration is constant, the value of that acceleration. (c)I need answer asap. Tysm! A car starts from rest with an acceleration of 6.8 m/s2 which decreases linearly with time to zero in 9.1 seconds, after which the car continues at a constant speed. Determine the time t required for the car to travel 360 m from the start.
- 27. A driver of a car going 25.0 m/s suddenly notices a stop sign 40.0 m ahead. The braking deceleration rate of the car is 10.0 m/s², but it takes the driver 0.75 s (reaction time) to get the brakes applied. (a) Determine if the car runs the stop sign. (b) Determine the maximum initial speed at which the car could be moving and manage to stop at the sign.While entering a freeway, a truck accelerates from rest at a rate of 2.1 m/s2 for 11 s. Part (a) How far does the trucktravel in those 11 s, in meters? Part (b) What is the truck's final velocity, in meters per second?7. The height of a helicopter above the ground is given by h =20.0 t-5.0 t where h is in meters and t is in seconds. At t=1.00 s, the helicopter releases a small mailbag. a) What is speed of a mailbox before hint to the ground? b) How long mailbox in air? 8. Starting from rest at 5 m from origin, a small still ball's horizontal component of velocity is 90.0 mile/hour in a straight line in 10.0 s. Ball's acceleration is constant during the entire motion, what is ball's final position?
- 10) A jaguar was observed to have left skid marks that were 300 m in length. Assuming that the jaguar skidded to a stop with a constant acceleration of – 3.90 m/s2, determine the speed of the jaguar before it began to skid.1. A car is moving in a linear path with velocity, v = 35 sin t for t = 1.5 s from rest. The car then maintains the velocity for 10 seconds before the driver hit the brake after seeing a dog on the road. Given that the dog is 500 m away from the car, (a) find out the minimum constant deceleration needed by the car in order for the car not to hit the dog. (b) find the time for the car to stop during the brake. (c) find the total distance moved by the car from rest to stop with the minimum constant deceleration. (d) sketch the velocity-time (v-t) graph of the car from rest to stop with the minimum constant deceleration.7. A particle is moving in a straight line such that the relation below gives its position. Calculate (a) its = average acceleration during the time interval from t₁ acceleration as a function of time. 7.00 s, and (b) its instantaneous 4.00 s to te = x = (6.3 m/s²)² + (4.9 m)