# Inclined throw - motorcycle jumps from the ramp

1. May 2, 2014

### Karol

Inclined throw -- motorcycle jumps from the ramp

1. The problem statement, all variables and given/known data
The motorcycle jumps from the ramp. what is the minimum speed at the edge in order to reach the other side.

2. Relevant equations
Constant acceleration: V=-gt

3. The attempt at a solution
The time to reach height of 1.5 meters:
$$V_0\sin30^0=gt \rightarrow t=\frac{V_0}{2g}$$
The horizontal distance:
$$V_0\cos30^0\cdot \frac{V_0}{2g}=10$$
$$V_0=15.2 [m/sec]=54.7 [km/h]$$
And it should be about 45 [km/h]

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2. May 2, 2014

### Staff: Mentor

Only if the motorcycle does not have a vertical velocity at the upper point. This is not true here. It will follow a parabolic path and "fall down" a bit at the end, this increases the time.

You'll have to consider both horizontal and vertical motion together.

3. May 2, 2014

### paisiello2

First equation is wrong one.