Two meteoroids are heading for Earth. Their speeds as they cross the Moon's orbit are . If one is moving directly toward Earth and the other is moving at a angle to the line connecting the Moon and Earth, what is the magnitude of the velocity component toward Earth for the second meteoroid?
4. 2D Kinematics
Velocity in 2D
- Scelta multipla127views
- Scelta multipla
In the context of motion in two dimensions, how do and differ?
128views - Scelta multipla
A ball moves on a tabletop. The ball has initial x & y coordinates (1.8m, 3.6m). The ball moves 10m/s at 53.1° above the x-axis for 4s. What are the x & y coordinates of the ball's final position?
2742views26rank4comments - Scelta multipla
A blue dot is projected upward from the ground with an initial velocity of at an angle of above the horizontal. What is the speed of the blue dot when it is above the road? (Assume and ignore air resistance.)
117views - Scelta multiplaA particle moves in the plane with velocity , where and . In which region of the -plane is the x-component of velocity negative?86views
- Scelta multipla
A soccer ball is kicked at an angle of above the horizontal and lands meters away after seconds. With what speed did it leave the kicker's foot?
120views - Scelta multipla
A ball is thrown upward at an angle in a uniform gravitational field. What is the value of the vertical component of the velocity of the ball when it reaches its maximum height?
116views - Scelta multipla
A coastal breeze pushes your sailboat at constant velocity for 8 min. After checking your instruments, you determine you've been pushed 650 m west and 800 m south. What was the magnitude & direction of your average velocity?
2788views29rank8comments - Scelta multipla
While following a treasure map, you start at an old oak tree. You first walk 85 m at 30.0° west of north, then walk 92 m at 67.0° north of east. You reach the treasure 2 minutes later. Calculate the magnitude of your average velocity for the entire trip.
3463views42rank7comments - Scelta multipla
While following a treasure map, you start at an old oak tree. You first walk 85 m at 30.0° west of north, then walk 92 m at 67.0° north of east. You reach the treasure 2 minutes later. Calculate your average speed for the entire trip.
3057views25rank1comments