Answer:
Solid cylinder
Explanation:
because hollow may blow and just bounce
Answer:
<h2>0.39m/s^2</h2>
Explanation:
Step one:
given data
mass m= 300kg
applied force F= 1000N
coefficient of friction μ= 0.3
Step two:
The net force Fn= applied force-friction force
Fn=F-F1
F1= limiting force
F1=μ*m*g
F1=0.3*300*9.81
F1=882.9N
the Net force= 1000-882.9
Fn=117.1N
Step three:
we know that
F=ma
Fnet=ma
a= Fnet/m
a=117.1/300
a=0.39m/s^2
Answer:
Mandaloun won the race.
Explanation:
First, we will calculate the time taken by the Hot Rod Charlie:

where,
t = time taken by Hot Rod Charlie = ?
s = distance covered = 1.25 miles
v = speed of Hot Rod Charlie = 0.79 miles/min
Therefore,

Since Hot Rod Charlie took more time (1.58 min) than the Mandaloun (1.52 min).
<u>Therefore Mandaloun won the race.</u>
Answer:
51.96 m/s^-1
Explanation:
a) see the attachment
b) As we know the velocity of the projectile has two component, horizontal velocity v_ox. and vertical velocity v_oy as shown in the figure. At the highest point of the trajectory, the projectile has only horizontal velocity and vertical velocity is zero. Therefore at the highest point of the trajectory, the velocity of the projectile will be
v_ox=v_o*cosФ
=60*cos (30)
= 51.96 m/s^-1
Answer:
91.33 m towards the south
Explanation:
At the highest point , the boulder will be at rest so its velocity will be zero . When it explodes into two fragments , momentum in horizontal direction will be conserved since there is no external force in horizontal direction . So
m₁ v₁ = m₂ v₂
m₁ v₁ = 3m₁ v₂
v₁ = 3 v₂
So velocity of larger fragment will be 1 / 3 times the velocity of smaller one , in horizontal direction , to conserve momentum.
The smaller fragment travels a distance of 274 m horizontally in the north , the larger fragment will travel 274 / 3 or 91.33 m towards the south. It is so because time of fall for both is same , Or they travel in horizontal direction during the same time.