What is the horizontal velocity of the pencil? the ? is you are standing in the aisle of a bus that travels along a straight road at 100km/h, and you hold a pencil still above your head. then relative to the bus,the velocity of the pencil is km/h and relative to the road,the pencil has a horizontal velocity of one the following. which is it. less than 100km/h 100km/h or more than 100km/h ? please explain
relative to the bus, it is not moving.
Relative to the ground, it is the same as the bus.
VeloPencilrelativetoground=Vbusrelative to ground + Vpencilrelativeto bus
To determine the horizontal velocity of the pencil relative to the road, we need to consider the velocity of the bus and the velocity of the pencil relative to the bus.
Since you are holding the pencil still above your head while standing in the aisle of the bus, the pencil has the same velocity as the bus. Therefore, the velocity of the pencil relative to the bus is 100 km/h (same as the velocity of the bus).
Next, to find the velocity of the pencil relative to the road, we need to add the velocity of the bus and the velocity of the pencil relative to the bus. Since the velocities are in the same direction, we simply add them together.
So, the velocity of the pencil relative to the road is 100 km/h (bus velocity) + 0 km/h (pencil's velocity relative to the bus), which equals 100 km/h.
Therefore, the horizontal velocity of the pencil relative to the road is 100 km/h.