Answer:
A. After 3.57 seconds, the racecar will overtake the stock car
B. distance travelled = 37. 59 m
C. v₁ = 21.06 m/s
v₂ = 16.45 m/s
Explanation:
Using, S = ut + 1/2at² where s is displacement, u is initial velocity, t is time, a is acceleration.
Car 1 has acceleration a = +5.9 m/s²; Car 2 has acceleration a = +3.6 m/s²
A. The time for the two cars to be directly side by side be t.
Beyond time, t, Car 1 will overtake Car 2.
Since both cars are starting from rest, initial velocity, u, = 0
S = 1/2at²
For car 1, time t = t - 1.0 since it started 1.0 second behind car 2
s₁ = 1/2 * 5.9 * (t - 1)²
s = 2.95t² - 5.9t + 2.95
For car 2; s₂ = 1/2 * 3.6 * t² = 1.8t²
at time t, the displacement of the two cars will be equal; s₁ = s₂
2.95t² - 5.9t + 2.95 = 1.8t²
1.15t² - 5.9t + 2.95 = 0
solving for t using the quadratic formula
t = (5.9 ± 4.61)/2.3
t = 4.57 s or 0.56 s
since t cannot be less than 1.0 s, t = 4.57 s
Time for car 1 = (4.57 - 1.0) s = 3.57 s
Therefore, after 3.57 seconds, the racecar will overtake the stock car
B. The distance travelled by both cars, s = 1/2 * 3.6 * 4.57² = 37.59 m OR
s = 1/2 * 5.9 * 3.57² = 37.59 m
distance travelled = 37. 59 m
C. Using v² = u² + 2as; since u = 0, v² = 2as
velocity of car 1; v₁² = 2 * 5.9 * 37.59
taking square root of both sides
v₁ = 21.06 m/s
velocity of car, v₂² = 2 * 3.6 * 37.59
taking square root of both sides
v₂ = 16.45 m/s
B. subject.
C. dependent adverbial clause.
D. infinitive.
Answer:
Raise your hand to speak, and wait your turn.
Explanation:
As a student of being online it was hard to participate because no one usually followed a simple rule we would all use in school. Some argued back and forth with each other. I would say let the teacher decide who they would like to pick on and wait on your turn and remain muted.
Answer:
Use the drop-down menus to answer the questions.
What can you conclude about the work of engineers based on today's reading?
✔ Engineers have to be able to see failure as an opportunity for improvement.
Which is an important character trait for an engineer or inventor?
✔ being persistent
Explanation:
Answer:
I've done it
Explanation:
convey the intelligence level of the men in the scene.
illustrate the sense of fear the narrator is experiencing.
reflect the reality of the characters’ situation in a straightforward manner.
indicate that the narrator may not fully understand his surroundings.
Hemingway uses vague pronouns and simple language to reflect the reality of the character's situation in a straightforward manner.
The answer to this question would be C.