For an object is moving with constant positive acceleration, which of the follow

Question

For an object is moving with constant positive acceleration, which of the following statements is true? [Enter all correct answers eg. B or AC or ABC or ...] The velocity of the object must be negative The velocity of the object must be continually changing by the same amount each second The position of the object must be constant The velocity of the object must be continually changing by varying amounts None of the above You are at standing at a window in the University tower that is 32.0 meter above the ground. Your physics professor (who is 2.02 m tall is walking on the ground below, approaching to tower at a speed of 1.48 m/s. You are holding an egg, which you would like to drop on your professor's head. If you drop the egg from rest, how far in advance of the tower should your professor be (in distance) at the instant of release such that the egg hits him directly on the head as he passes below the window? Two vectors, A with magnitude 22.0 units is directed at an angle of 37.0 deg above the +x-axis and B is 32.0 units long directed at an angle of 37.0 deg to the right of the +yjaxis. Find the y-component of the vector A - B. For the previous problem, find the angle of the vector A - B measured relative to the positive x-axis. [Note: CAPA uses deg as the symbol for degrees] A car is travelling in a straight line at a speed of 119.0 km/hr. It the brakes can apply a maximum Three forces, F1 =5.1 N, F2 = 9.8 N and F3 = 10.0 N are acting on a small box of mass 41.0 kg. If the box is moving in the direction of F3 at constant speed, what is the magnitude of the combination of F2 and F3 A bronze cannon ball with a mass of 2.5 kg is fired vertically from a small cannon and reaches a height of 12.0 m. If the canon is now aimed at an angle 35 degrees above the horizontal, calculate the horizontal distance the cannon ball would travel before it reaches the ground. For the previous problem, calculate the maximum height reached by the cannon ball. A stone is dropped from the top of a 70.0 m tall building. How far above the ground is the stone 1.20 seconds before it reaches the ground? Ball A, which has a mass of 3.8 kg, is dropped from the 40 floor of a building. At the same time, ball B, which has a mass of 2.4 kg, is dropped from the 34 floor of the same building. Ignoring air resistance, which of the following statements is true? [Enter all correct answers eg. A or AC or ABC or...] Ball A always has the same speed as ball B The distance between the balls stays the same The balls have the same acceleration Ball B reaches the ground after ball A None of the above You observe that a falling stone takes 0.39 seconds to pass a window that is 2.1 meters tall. What is the speed of the stone as it reaches the bottom of the window?

Explanation / Answer

1) B

2) 3.03 m

3) -12.4

4) 97.35 degree

5) 118.7 m

6) -10

7) 22.5 m

8) 7.89 m

9 ) 37.3 m

10 ) ABCD

11) 7.31 m/s

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.