I need help with question 1 through 5 thank you. I appreciate it

QUESTION 1:

You pull a box with a constant force across a frictionless table using an attached rope held horizontally. If you now pull the rope with the same force at an angle to the hori- zontal (with the box remaining at on the table), does the acceleration of the box (a) remain the same, (b) increase, or (c) decrease? Explain. A bear sling, Fig. 30, is used in some national parks for placing backpackers' food out of the reach of bears. Explain why the force needed to pull the backpack up increases as the backpack gets higher and higher. Is it possible to pull the rope hard enough so that it doesn't sag at all? FIGURE 30 Question 24. A heavy crate rests on the bed of a flatbed truck. When the truck accelerates, the crate remains where it is on the truck, so it, too, accelerates. What force causes the crate to accelerate?When attempting to stop a car quickly on dry pavement, which of the following methods will stop the car in the least time? (a) Slam on the brakes as hard as possible, locking the wheels and skidding to a stop. (b) Press the brakes as hard as possible without locking the wheels and rolling to a stop. Explain. The game of tetherball is played with a ball tied to a pole with a string. When the ball is struck, it whirls around the pole as shown in Fig. 29. In what direction is the acceleration of the ball, and what causes the acceleration? FIGURE 29 Problem 17