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i need help in Q 2.2 2.3 2.5 2.6 2.7 as you see in the pic I attach
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1.15. Value of g in the CGS system
1.16. Value of g in the MKS system
2.
Practice Homework
2.1. A long jumper leaves the ground at angle of 25° above the horizontal at a speed of
12 m/s. (i) What is the maximum height reached, and (ii) what is the range?
2.2. A stone is thrown upward at angle of 35° with a speed of 25 m/s from the top of a
50-m high building. (a) How long does it take the stone to reach the ground? (b)
What is the speed of the stone just before it hits the ground?
2.3. Suppose the position of a particle is given as a function of time by r(t) = x(t)i +
y(t)j, with x(t) = at +b and y(t) = ct? + d, where a = 1.2 m/s, b = 1.2 m,c=0.150
khatri/DS
PAGE 15
2.5.
After a ball rolls off the edge of a horizontal table at time t= 0, its velocity as a
function of tie t is given by v(t) = 1.2 i-9.8tj. The ball's displacement away
from the edge of the table, during the time of 0.4 seconds for which the ball is in
flight, is given by 6.0.5 v(t)dt.
PROBLEM FROM CHAPTER # 2: (a)
vx (m/s)
2.6.
8
6
4
2
Plot a graph of the acceleration versus
time. Determine the average acceleration
of the object (b) in the interval t - 5 to t=
15 seconds and (c) in the interval t = 0
and t=20 seconds.
t(s)
5
10
15
20
og T op op
-4
-6
-8
2.7.
az (m/s)
2
1
1
A particle starts from rest and accelerates as
shown in the figure to your right. Determine (a)
the particle's speed at t= 10 seconds and t = 20
seconds, and (2) the distance travelled in the first
0
t(s)
20
5
10
15
-1
20 seconds.
- 2
-3
3.
Priming Homework
3.1. Definition of a sine function
3.2.
Definition of a cosine function
3.3.
Definition of a tangent function
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