Author Question: A race car moving with a constant speed of 60 m/s completes one lap around a circular track in 50 s. ... (Read 100 times)

tuffie · **on:** Aug 1, 2020

Question 1

A projectile starts at the coordinate origin, where the displacement vector also originates. The initial velocity, v₀, makes an angle θ₀ with the horizontal where 0 <θ₀< 90°. At the instant when the projectile is at the highest point of its trajectory, the displacement, velocity and acceleration vectors are

,

and

. Which statement is true?

◦

is parallel to

.

◦

is perpendicular to

.

◦

is parallel to

.

◦

is perpendicular to

.

◦

is perpendicular to

.

Question 2

A race car moving with a constant speed of 60 m/s completes one lap around a circular track in 50 s. What is the magnitude of the acceleration of the race car?

◦

8.8 m/s²

◦

7.5 m/s²

◦

9.4 m/s²

◦

6.3 m/s²

◦

5.3 m/s²

Ahernandez18 · **Reply #1 on:** Aug 1, 2020

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

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