Answer:
Explanation:
1.
=
* cos
⇒ 16*cos32 ≈ 13.6 m/s (13.56)
2.
=
* sin
⇒ 16* sin32 ≈ 9.4 m/s
3.
=
=
(the g (gravity) depends on the country but i'll take the average g which is 9.2m/s^2)
≈ 3.6677+1.5 ≈ 5.2m
4.
=
=
≈ 23.5m (23.47)
5. -
answer 4 could be wrong, not certain about that one and i don't know 5
After impact velocity = 14.968 ft/s
Weight and mass of Bullet and wooden block:
Bullet: w = 1oz = 1/16 lb m = 0.001941 lb
wooden block : W = 5lb M = 0.15528 lb
velocity of block and bullet immediately after impact:
Σmv1 + ΣImp = mv2
Resolving vertical component
( m× v₀cos30⁰) + 0 = ( m+M) v'
v' = ( m× v₀cos30⁰)/ (m+M)
v' = 14.968 ft/s
Horizontal and vertical component of the impulse exerted by block on the bullet:
Here we will apply the principle of impulse and momentum.
Horizontal component:
-mv₀ cos30⁰ + RxΔt =0
RxΔt = mv₀sin30⁰
= 0.001941 × 1400sin30⁰
RxΔt = 1.3587 lb.s
Vertical component:
-mv₀cos30⁰ + RyΔt = -mv'
RyΔt = m( v₀cos30⁰-v')
RyΔt = 0.001941(1400cos30⁰ - 14.968)
= 2.32 lb.s
Learn more about impact here:
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The altitude or height of the pole vaulter as she crosses the bar is 4.04 m.
<h3>What is the height of the pole vaulter?</h3>
The height of the pole vaulter is determined from the change in kinetic energy which is equal to the potential energy at that height.
- Potential energy = Change in kinetic energy
h = (v - u)²/2g
h = (10 - 1.1)²/2 * 9.8
h = 4.04 m.
In conclusion, the height is determined from the potential energy at that height.
Learn more about potential energy at: brainly.com/question/14427111
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Answer:
A frame of reference is the location from which motion is perceived and measured. For all observers, the speed of light remains constant.
Explanation: