Reference no: EM132658159

1) A projectile is launched with an initial velocity of v=4i+3j(m/s). What is the velocity of the projectile when it reaches its highest point? Explain.

2) Driving down the highway, you find yourself behind a heavily loaded tomato truck. You follow close behind the truck, keeping the same speed. Suddenly a tomato falls from the back of the truck. Will the tomato hit your car or land on the road, assuming you continue moving with the same speed and direction? Explain.

3) As you walk briskly down the street, you toss a small ball into the air.

a) If you want the ball to land in your hand when it comes back down, should you toss the ball

i) straight upward

ii) in a forward direction

iii) in a backward direction, relative to your body?

b) Choose the best explanation from among the following: (only one)

i) If the ball is thrown straight up you will leave it behind.

ii) You have to throw the ball in the direction you are walking.

iii) The ball moves in the forward direction with your walking speed at all times.

4) An archer shoots an arrow horizontally at a target 15 m away. The arrow is aimed directly at the center of the target, but it hits 52 cm lower. What was the initial speed of the arrow?

5) A mountain climber jumps a 2.8 m wide crevasse by leaping horizontally with a speed of 7.8 m/s.

a) If the climber's direction of motion on landing is -40 degrees , what is the height difference between the two sides of the crevasse?

b) Where does the climber land?