Question

a soccer player is ready to deliver a kick to a ball. he will kick the ball with a force of 1350 N directed at an angle of 48 degree above horizontal. his foot will be in contact with the ball for 5.9x10^-3 s. what is the impulse delivered by the player's foot?

A volleyball player is ready to return the approaching ball with a speed of 11.0m/s. if she returns the ball in the same direction with a speed of 22.0 m/s what impulse did she need to deliver? the mass of a volleyball is 270g. answer in kg*m/s

Thanks

Answer #1

Impulse is the product of applied force and the time duraction for which it is applied.

I=Ft.

Also impulse is the change in momentum.

a) provided in question force F=1350N, time duration t=5.9*10^(-3)

Impulse=1350*5.9*10(-3)=7.965Ns

b)provided in question mass of volleyball

m=270g,

Initial speed vi=11m/s

Initial mimentum= 0.270*11=2.97kgm/s

Final speed vf=-22m/s (direction changed)

Final momentum=0.270*(-22)=5.94kgm/s

So magnitude of change in momentum=2.97kgm/s

So she need to deliver impulse of 2.97Ns of impulse

A soccer player kicks a soccer ball of mass 0.45 kg that is
initially at rest. The player's foot is in contact with the ball
for 1.60 × 10-3 s, and the force of the kick is given by
F(t) = [(6.39 × 105)t - (3.99
× 108)t2] N for 0≤t≤1.60×10-3s,
where t is in seconds. Find the magnitudes of the
following: (a) the impulse on the ball due to the
kick, (b) the average force on the ball from...

A soccer player kicks a soccer ball of mass 0.45 kg that is
initially at rest. The player's foot is in contact with the ball
for 1.50 × 10-3 s, and the force of the kick is given by F(t) =
[(6.99 × 105)t - (4.66 × 108)t2] N for 0 less-than-or-equal-to t
less-than-or-equal-to 1.50 times 10 Superscript negative 3 Baseline
s, where t is in seconds. Find the magnitudes of the following: (a)
the impulse on the ball due...

A soccer player kicks a soccer ball of mass 0.50 kg that is
initially at rest. The player's foot is in contact with the ball
for 1.8 10-3 s. The force of the kick is given by the following
formula for 0 t 1.8 10-3 s, where t is in seconds. F(t) = [(7.2
106)t - (2.2 109)t2] N (a) Find the magnitude of the impulse
imparted to the ball. Incorrect: Your answer is incorrect. Ns (b)
Find the magnitude...

A player bounces a 0.46-kg soccer ball off her head, changing
the velocity of the ball from v⃗ i = (8.4 m/s )x^ + ( -2.3 m/s )y^
to v⃗ f = (5.9 m/s )x^ + (3.0 m/s )y^.
If the ball is in contact with the player's head for 6.7 ms,
what is the direction of the impulse delivered to the ball?
What is the magnitude of the impulse delivered to the ball?

A soccer player takes a free kick from a spot that is 26 m from
the goal. The ball leaves his foot at an angle of 35 ∘, and it
eventually hits the crossbar of the goal, which is 2.4 m from the
ground. At what speed did the ball leave his foot?

A soccer player kicks a soccer ball of mass 0.45 kg that is
initially at rest. The player's foot is in contact with the ball
for 1.9

You kick a soccer ball with a force (F) of 1200 N at an angle of
45 degrees. The soccer ball has an initial velocity of (v i ) of 5
m/s at 0 degrees , a mass (m) of 0.4 kg, and the time of contact
(t) between yo ur foot and the ball is 0.01 s. • H ow far does the
ball travel before it hits the ground (∆s x ) ? • Express your
initial velocity...

A 71 kg soccer player jumps vertically upwards and heads the
0.45 kg ball as it is descending vertically with a speed of 27 m/s.
If the player was moving upward with a speed of 4.0 m/s just before
impact, what will be the speed of the ball immediately after the
collision if the ball rebounds vertically upwards and the collision
is elastic?
m/s
If the ball is in contact with the player's head for 20 ms, what is
the...

A soccer ball of mass 0.4 kg is moving horizontally with a speed
of 20 m/s when it is kicked by a player. The kicking force is so
large that the ball flies up at an angle of 30 degrees above the
ground. The player however claims (s)he aimed her/his foot at a 40
degree angle above the ground. First briefly but precisely explain
how this is possible, based on what you heard in the lecture. Then
calculate the average...

A 55-kg soccer player jumps vertically upwards and heads the
0.45-kg ball as it is descending vertically with a speed of 27
m/s.
(a) If the player was moving upward with a speed of 4.0 m/s just
before impact, what will be the speed of the ball immediately after
the collision if the ball rebounds vertically upwards and the
collision is elastic?
(b) If the ball is in contact with the player's head for 24 ms,
what is the average...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 59 seconds ago

asked 59 seconds ago

asked 6 minutes ago

asked 6 minutes ago

asked 12 minutes ago

asked 40 minutes ago

asked 52 minutes ago

asked 52 minutes ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago