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Physics

5

11 min read
Posted on 
March 24th, 2023
Home Physics 5

1- During a hard sneeze, your eyes might shut for 0.56 s. If you are driving a car at 71 km/h during such a sneeze, how far does the car move during that time?

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Number
 

the tolerance is +/-2%

 

2-A car travels up a hill at a constant speed of 38 km/h and returns down the hill at a constant speed of 59 km/h. Calculate the average speed for the round trip.

Number
 

the tolerance is +/-2%

 

 

3-The position function x(t) of a particle moving along an x axis is x = 6.00 – 7.00t2, with x in meters and t in seconds. (a) At what time and (b) where does the particle (momentarily) stop? At what (c) negative time and (d) positive time does the particle pass through the origin?

(a) Number
(b) Number
(c) Number
(d) Number
 

 

 

 

4- The position of a particle moving along an x axis is given by x = 13.0t2 – 3.00t3, where x is in meters and t is in seconds. Determine (a) the position, (b) the velocity, and (c) the acceleration of the particle at t = 7.00 s. (d) What is the maximum positive coordinate reached by the particle and (e) at what time is it reached? (f) What is the maximum positive velocity reached by the particle and (g) at what time is it reached? (h) What is the acceleration of the particle at the instant the particle is not moving (other than at t = 0)? (i)Determine the average velocity of the particle between t = 0 and t = 7.00 s.

(a) Number
(b) Number
(c) Number
(d) Number
(e) Number
(f) Number
(g) Number
(h) Number
(i) Number

 
 

 

 

 

5-The position of a particle moving along the x axis depends on the time according to the equation x = ct5 – bt6, where x is in meters and t in seconds. Let c and b have numerical values2.4 m/s5 and 1.6 m/s6, respectively. From t = 0.0 s to t = 1.9 s, (a) what is the displacement of the particle? Find its velocity at times (b) 1.0 s, (c) 2.0 s, (d) 3.0 s, and (e) 4.0 s. Find its acceleration at (f) 1.0 s, (g) 2.0 s, (h) 3.0 s, and (i) 4.0 s.

(a)  Number
(b)  Number
(c)  Number
(d)  Number
(e)  Number
(f)  Number
(g)  Number
(h)  Number
(i)  Number
 

 

 

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