Exam 3: Motion in Two Dimensions

A plane is moving due north,directly towards its destination.Its airspeed is 210 mph.A constant breeze is blowing from west to east at 25.0 mph.In which direction is the plane pointed?

A plane is moving due north,directly towards its destination.Its airspeed is 220 mph.A constant breeze is blowing from west to east at 50 mph.How long will it take for the plane to travel 220 miles north?​

A car's initial velocity is 50.0 km/h in the direction 60.0° north of east,and its final velocity is 70.0 km/h in the direction 40.0° south of east.If the time period for this journey is 30.0 minutes,what is the magnitude of the car's average acceleration?​

A jogger runs halfway around a circular path with a radius of 60.0 m.What,respectively,are the magnitude of the displacement and the distance jogged?

Wiley Coyote has missed the elusive road runner once again.This time,he leaves the edge of the cliff at 52.4 m/s horizontal velocity.If the canyon is 140 m deep,how far from his starting point at the edge of the cliff does the coyote land?

A car is initially moving at 20 m/s east,and a little while later it is moving at 10 m/s north.Which of the following best describes the orientation of the average acceleration during this time interval?

A plane is moving due north,directly towards its destination.Its airspeed is 210 mph.A constant breeze is blowing from west to east at 20.0 mph.At what rate is the plane moving north?

The highest mountain on Mars is Olympus Mons,rising 22 000 meters above the Martian surface.If we were to throw an object horizontally off the mountain top,how long would it take to reach the surface? (Ignore atmospheric drag forces and use g_Mars = 3.72 m/s². )

A string attached to an airborne kite is maintained at an angle of 44.0° with the horizontal.If a total of 160 m of string is reeled in while bringing the kite back to the ground,what is the horizontal displacement of the kite in the process? (Assume the kite string doesn't sag. )

Plane A is flying at 440 mph in the northeast direction relative to the Earth.Plane B is flying at 550 mph in the north direction relative to the Earth.What is the speed of Plane B as observed from Plane A?

Two projectiles are launched at 100 m/s,the angle of elevation for the first being 30° and for the second 60°.Which of the following statements is false?

A projectile is launched with speed v at an angle θ,the angle being less than 45º.What other angle would give the same range for this projectile launched at the same speed v?

A projectile is fired directly upwards at 49.4 m/s.A second projectile is dropped from rest at some higher elevation at the instant the first projectile is fired and passes the first projectile 3.00 s later.From the frame of reference of the first projectile,what is the velocity of the second projectile as it passes by?

A projectile is thrown horizontally at 11.5 m/s.The projectile hits the ground 0.570 s later.What is the angle of impact the projectile makes with the horizontal ground?

A jet airliner moving at 470 mph due east moves into a region where the wind is blowing at 110 mph in a direction 30.0° north of east.What is the new velocity and direction of the aircraft?

A stone is thrown at an angle of 30° above the horizontal from the top edge of a cliff with an initial speed of 12 m/s.A stop watch measures the stone's trajectory time from top of cliff to bottom to be 4.8 s.What is the height of the cliff? (g = 9.8 m/s² and air resistance is negligible)