Answer:
given values are:
- u=20 m/s
- t= 30 s
- s= 1200 m
- v= ?
- a=?
<h2>s = ut + 1/2 at²</h2>
1200 = 20×30 + 1/2 × 30²a
1200= 600 + 1/2 × 900a
600 = 450a
a = 600 / 450
a = 1.33 m/s²
<h2>v²= u² +2as</h2>
v² = 20² +2 × 1.33 × 1200
v²= 400 + 3192
v = √3592
v = 59.9 ≈ 60 m/s
Answer:
Step-by-step explanation:
Given
Required
The break even point
To do this, we make use of:
Collect Like Terms
Substitute 5 for x in
Hence, the break even point is:
Let d be distance travelled when they are level , and t = time that nora took to get level with mason
for Nora
6 = d/t
d = 6t
for Mason
5 = d / (t + 35)
d = 5 ( t + 350
so 6t = 5(t + 35)
solve for t
