. The president's airplane, Air Force One, flies at 250 m/s to the east with respect to the air. The air is moving at 35 m/s to the north with respect to the ground. Find the velocity of Air Force One with respect to the ground. 252 m/s c. 222 m/s b. 435 m/s d. 125 m/s 2.A motorboat, which has a speed of 5 meters per second in still water, is headed east as it crosses a river flowing south at 3.3 meters per second. What is the magnitude of the boat's resultant velocity with respect to the starting point? C. 5 m/s b. 6 m/s d. 8.3 m/s a. 3.3 m/s 3. A person observes a fireworks display from a safe distance of 0.750 kilometer. Assuming that sound travels at 340 meters per second in air, what is the time between the person seeing and hearing a fireworks explosion? a. 0.453 S c. 2.21 s b..410 s d. 255,000 S 4. A child walks 5 meters north, then 4 meters east, and finally 2 meters south. What is the magnitude of the resultant displacement of the child after the entire walk? a. 1 m c. 5 m b. 3 m d. 11 m 5.An object is shot from the ground (at 25 m/s) at 25 degrees and 65 degrees. Which one has the greater range? (assume no air resistance) a. 25 degrees c. 65 degrees b. Same for both d. none of the above

Q: Name: Period: 4. An object is shot 50 m/s at an angle of 70°. How high does it go? A. Use…

A: The time period of the object shot at the height is, t=v0sinθg=50 m/ssin70°9.8 m/s2=4.8 s (A) The x…

Q: 2. A person leaving home travels 15 m [E], then 21m [N], and finally 8.0 m [W]. What was the…

A:

Q: 2. A soccer player kicks a ball at a speed of 45.5 miles per hour at an angle of 39.5° up from…

A:

Q: 2. Christopher watches a stick float downstream in a river and notices that it moves 15 m [E] in a…

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Q: A canoeist paddles north across a river at 3.0 m/s. (The canoe is always kept pointed at right…

A:

Q: 4 .A plane travelling at 78 km/h [N] is blown westward by a wind with a speed of 56.0 km/h. What is…

A:

Q: A.How much time does it take to reach the goalpost? B.How far above the crossbar is the ball when it…

A: Given:- The ball velocity v = 25 m/s  projectile at the angle of 50o The goalpost is 30 m from the…

Q: 3. A rocket lifts off its launching pad with a vertical velocity of 20. m/s and horizontal velocity…

A: The magnitude of the resultant velocity is,

Q: A cannon ball is fired horizontally from a height of 20 m and strikes the ground at an angle of 45°.…

A:

Q: 3. A rescue plane flies at 90m/s (in the positive x- direction) at constant height h = 1000m toward…

A:

Q: Wile E. Coyote, having missed the Road Runner, leaves the edge of a cliff at 41.0 m/s horizontal…

A: Let us consider the downwards direction as positive. We have given here, Gravitational acceleration…

Q: A cannon at an elevation of 2000 feet above sea level fires a missile upward at an angle of 45…

A: We will answer the question using kinematic equations of motion. The detailed steps are as follows.

Q: A seagull flies at a velocity of 12.5 m/s relative to the air straight into the wind.   vSA = 12.5…

A: Given value--- vSA = 12.5 m/s t = 16 min d = 5.8 km We have to find--- 1. If it takes the bird 16…

Q: A seagull flies at a velocity of 8.5 m/s relative to the air straight into the wind. vSA = 8.5 m/s…

A: Given:- Velocity of the bird with respect to air is vSA=8.5 m/s Time  t=23 min  =23 min×60 s1 min…

Q: A firework is launched with an initial velocity of 25 m/s at an angle of 60 degrees with respect to…

A: Given quantities: Initial velocity of the firework (u) = 25 m/s angle made with the horizontal = 60…

Q: 5. A ship crosses a river aiming at the angle 9 to the left from the straight course. The speed of…

A:

Q: An object moves along the ry-plane. At some instant, its velocity and acceleration are J = – (3 m/s)…

A: for straight line motion, the velocity and acceleration are in same (or opposite) direction.

Q: Which one will be in the air the longest? Which one will have the greatest range?

A: The initial horizontal velocity of the balls , vx=5 m/s The vertical velocities of the ball are zero…

Q: You're feeding the fish at the pond by the baseball field and decide to do some physics…

A:

Q: A ball is thrown upward at an angle of 28° to the horizontal with initial velocity  ? = 62.0 m/s.…

A:

Q: 85. A plane travels N30°W at 450 mph and encounters a wind blowing due west at 30 mph. (See Example…

A: A vector quantity is the one that has magnitude and direction. displacement, velocity, and…

Q: A boat is able to move at 9.8 m/s in still water. If the boat is placed on the south shore of a…

A: A) Ø=14.2o from north direction in counter clockwise direction. B) the time, it will take to cross…

Q: 4. A swimmer is trying to get across the English Channel. She starts off swimming at 1.75 m/s [W 20°…

A: Step 1:We must compute the vector difference between the swimmer's initial and final velocities in…

Q: Abby is chasing Bradley due north along Warden Avenue at a speed of 7 m/s. She is 47 meters south of…

A: Given,Abby's speed: 7 m/sBradley's speed: 9 m/sLet's consider a coordinate system where the north…

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.