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# Question 1 1. At time t = 0 s, a puck is sliding on a horizontal table with a velocity 10.0 m/s, 60.0 above the +x axis. As the puck slides, a

please help. i am lost as a bitty in tall weeds and really need to pass this class.

Question 1 1. At time t = 0 s, a puck is sliding on a horizontal table with a velocity 10.0 m/s, 60.0° above the + x axis. As the puck slides, a constant acceleration acts on it that has the following components: a x = – 0.5 m/s 2 and a y = – 1.0 m/s 2 . What is the velocity of the puck at time t = 4.0 s? a. 6.00 m/s, 71.3° above the + x axis b. 1.83 m/s, 62.0° above the + x axis c. 5.54 m/s, 57.2° above the + x axis d. 1.38 m/s, 65.2° above the + x axis e. 4.50 m/s, 58.7° above the + x axis 1 points Save Answer Question 2 1. A car that was initially moving at 30 m/s accelerates in a straight­line path at a constant rate. The car travels a distance of 250 m in 5.0 seconds. What is the acceleration of the car? a. 4.0 m/s b. 6.0 m/s c. 10 m/s d. 5.0 m/s e. 8.0 m/s 1 points Save Answer 2 2 2 2 2 Question 3 1. Three runners start at the same place. Shaun runs 6.0 km due east and then runs 2.0 km due west. Mark runs 4.0 km due east. Jeff runs 3.0 km due west and then runs 7.0 km due east. Which of the following is true concerning the displacement of each runner? a. Shaun's displacement equals Jeff's displacement, but Mark's displacement is different b. Shaun, Mark, and Jeff have the same displacements c. Shaun's displacement equals Mark's displacement, but Jeff's displacement is different d. Shaun, Mark, and Jeff have different displacements e. Mark's displacement equals Jeff's displacement, but Shaun's displacement is different 1 points Save Answer
Question 4 1. A ball is thrown as a projectile at an angle of 30 . The initial velocity of the ball is 36 m/s. What is the maximum horizontal distance (Range) of the ball? a. 114.5 m b. 88 m c. 97 m d. 126 m e. 78.5 m 1 points Save Answer o Question 5 1. A boat moves 3.0 km due north and then moves 4.0 km due east. The time for this trip is half an hour. What is the average speed of the boat? a. 3.0 km/h b. 5.0 km/h c. 4.0 km/h d. 8.0 km/h e. 10.0 km/h 1 points Save Answer Question 6 1. A car travels due east at 20 m/s. It makes a turn due north and continues to travel at 15 m/s. What is the net velocity of the car? a. zero m/s b. 40 m/s, due south c. 25 m/s, 37° east of north d. 31 m/s, 55° south of west e. 31 m/s, 45° south of west 1 points Save Answer Question 7 1. What constant acceleration would a car, starting from rest, have to sustain in order to reach a velocity of 24 m/s due west in 4.0 s? a.
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