Question

The velocity vs. time graph for an object moving along a straight path is shown in the figure below. 25. What is the average acceleration of this object during the time interval of 0 s to 20.0 s A) 0 m/s" B) 1.6 m/s" C) 0.8 m/s" D) 1.1 m/s" 26. What is the instantaneous accelerations at 12 s. A) 0 m/s" B) 0.8 m/s" C) 1.6 m/s" D) 1.1 m/s" v (m/s) 8 6 4 2 0 -2 -4 -6 -8 5 10 15 20 t (s) A hiker walks 3.30 km north and then 2.75 km east, all in 3.20 hours. 27. What is the magnitude (in km) A) 5.8 km B) 2.8 km C) 3.1 km D) 4.3 km 28. What is the direction (in degrees north of east) of the hiker's displacement during the given time. A) 38.15° B) 50.2° C) 218.15° D) 230.2° 29. What is the magnitude (in km/h) (in degrees north of east) of the hiker's average velocity during the given time. A) 1.34 km/h B) 0.372 km/h C) 0.134 km/h D) 3.72 km/h

          The velocity vs. time graph for an object moving along a straight path is shown in the figure below.
25. What is the average acceleration of this object during the time interval of 0 s to 20.0 s
A) 0 m/s"
B) 1.6 m/s"
C) 0.8 m/s"
D) 1.1 m/s"
26. What is the instantaneous accelerations at 12 s.
A) 0 m/s"
B) 0.8 m/s"
C) 1.6 m/s"
D) 1.1 m/s"

v (m/s)
8
6
4
2
0
-2
-4
-6
-8
5
10
15
20
t (s)

A hiker walks 3.30 km north and then 2.75 km east, all in 3.20 hours.
27. What is the magnitude (in km)
A) 5.8 km
B) 2.8 km
C) 3.1 km
D) 4.3 km

28. What is the direction (in degrees north of east) of the hiker's displacement during the given time.
A) 38.15&deg;
B) 50.2&deg;
C) 218.15&deg;
D) 230.2&deg;

29. What is the magnitude (in km/h) (in degrees north of east) of the hiker's average velocity during the given time.
A) 1.34 km/h
B) 0.372 km/h
C) 0.134 km/h
D) 3.72 km/h

The velocity vs. time graph for an object moving along a straight path is shown in the figure below.
25. What is the average acceleration of this object during the time interval of 0 s to 20.0 s
A) 0 m/s"
B) 1.6 m/s"
C) 0.8 m/s"
D) 1.1 m/s"
26. What is the instantaneous accelerations at 12 s.
A) 0 m/s"
B) 0.8 m/s"
C) 1.6 m/s"
D) 1.1 m/s"

v (m/s)
8
6
4
2
0
-2
-4
-6
-8
5
10
15
20
t (s)

A hiker walks 3.30 km north and then 2.75 km east, all in 3.20 hours.
27. What is the magnitude (in km)
A) 5.8 km
B) 2.8 km
C) 3.1 km
D) 4.3 km

28. What is the direction (in degrees north of east) of the hiker's displacement during the given time.
A) 38.15 deg;
B) 50.2 deg;
C) 218.15 deg;
D) 230.2 deg;

29. What is the magnitude (in km/h) (in degrees north of east) of the hiker's average velocity during the given time.
A) 1.34 km/h
B) 0.372 km/h
C) 0.134 km/h
D) 3.72 km/h

Added by Austin R.

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