These are assigned first for E-block. Then C-block will have a go at them after Monday's class.
1. Projectile motion. Consider throwing a ball horizontally at 30 m/s off a 25-m high cliff.
a. Find the time to hit the ground.
b. Find the horizontal distance where the ball lands from the cliff.
2. Consider a velocity vector of 40 m/s, at an angle of 60 degrees (with respect to horizontal).
a. Find the x-component (horizontal).
b. Find the y-component (vertical).
This type of thing will be important when we deal with projectiles launched at angles.
3. Think about how we might approach the problem of projectiles launched at angles.
For example, if you threw a ball at 20 m/s, with an angle of 30 degrees, how would you find things like the time in air and horizontal displacement? Try this, or think about how to approach it.
4. Practice for vectors at non-right angles. Two vectors, 200 and 500, are separated by an angle of 40 degrees. Find the resultant vector (c, if you use the law of cosines).
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