Reference no: EM131008582
1. A light aircraft flies 120 km (E) in 0,80 h, then 40 km [W] in 0.20 h. Calculate the average speed for the total flight, and calculate the average velocity for the total flight.
2. An oil tanker sailing west has an engine problem. It coasts to a stop in 0.50 h, moving 10 km in a straight line. What is the average acceleration of the ship?
3. A toy car at the 0 cm mark on a metre stick moves toward the 100 cm mark at a constant speed of 5.0 cm/s. Another toy car starts at the 100 cm mark at the same time, accelerating toward the 0 cm mark at 1.0 cm/s2. How long will it take for the two cars to collide?
4. While flying her helicopter in a hovering position 40.0 m above the ground, the pilot threw a rope with an initial velocity of 4.00 m/s (down]. What is the speed of the rope at the instant that it hits the ground?
5. An airliner lands on runway 18, which points south. The pilot applies reverse thrust and bring the plane to a stop in 20.0s, moving 1.20 km in a straight line. What is the average acceleration of the airliner?
6. Kristen skateboarded 15.5 km in a direction 37° north of west, and then an additional 15.0 km in a direction 64° south of west. Determine Kristen's total displacement.
7. A hiker used a compass to orient himself as he walked 3.00 km in a direction 50.0' north of west, and then an additional 2.00 km in a direction 20.0° south of west. The trip took 1.00 h. Determine the average velocity of the hiker.
8. A motorboat was moving at 50.0 km/h [E 20° S]. The operator then turned the boat [E 20° N] and decreased the speed to 30.0 km/h over 5.0 min. Determine the average acceleration of the boat.
9. Andrew is standing 10 m from Juliet's house. Andrew tosses a ball to Juliet, and the ball travels at 5.00 m/s at an angle of 50° above the ground. The ball passes through Juliet's window. How far above the ground is the window?
10. A helicopter is flying from Belleville to Kingston, which lies due east of Belleville. The helicopter flies at a speed of 160.0 km/h in still air. A wind of 45.0 km/h [E 56° N] is blowing. In what direction must the pilot aim the helicopter to fly directly to Kingston?