a.Define Impulse b. A 50 kg skateboarder is riding her 2.3 kg skateboard at a speed...
a.Define Impulse
b. A 50 kg skateboarder is riding her 2.3 kg skateboard at a speed of 4 m/s. What is her momentum?
c. 15 gram model rocket exerts a force of 10 Newtons propelling the rocket upwards. The rocket initially starts from rest and the rocket motor burns for 1/10 of a second. What impulse does the rocket exert?
Homework Answers
Add Answer to:
a.Define Impulse
b. A 50 kg skateboarder is riding her 2.3 kg skateboard at a
speed...
Question 2 A 50 kg skateboarder is planning a trick for an upcoming competition. She starts out riding her 7 kg skatebo...
Question 2 A 50 kg skateboarder is planning a trick for an upcoming competition. She starts out riding her 7 kg skateboard with initial speed of 2.5 m/s. She and the skateboard then slide down a slope of height 3 meters. At the bottom of the slope, she steps from the first skateboard onto a second stationary 7 kg skateboard, leaving the first skateboard moving at half the speed it was before the switch. Finally, riding the 2nd skateboard, she...
please explain each step Question 2 A 50 kg skateboarder is planning a trick for an...
please explain each step
Question 2 A 50 kg skateboarder is planning a trick for an upcoming competition. She starts out riding her 7 kg skateboard with initial speed of 2.5 m/s. She and the skateboard then slide down a slope of height 3 meters. At the bottom of the slope, she steps from the first skateboard onto a second stationary 7 kg. skateboard, leaving the first skateboard moving at half the speed it was before the switch. Finally, riding...
1) A 48.5-kg skater is standing at rest in front of a wall. By pushing against...
1) A 48.5-kg skater is standing at rest in front of a wall. By
pushing against the wall she propels herself backward with a
velocity of -1.46 m/s. Her hands are in contact with the wall for
1.00 s. Ignore friction and wind resistance. Find the average force
she exerts on the wall (which has the same magnitude, but opposite
direction, as the force that the wall applies to her). Note that
this force has direction, which you should indicate...
6. A 50-kg front seat passenger in a car moving initially with a speed of 25...
6. A 50-kg front seat passenger in a car moving initially with a speed of 25 m/sisbr rest by an air bag in a time of 0.4 s a) What is the impulse acting on the passenger? b) What is the average force acting on the passenger in this process?? 7. A ball traveling with an initial momentum of 5.0 kg.m/s bounces off a wall and comes back in the opposite direction with a momentum of -4.5 kg.m/s a) What...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5 m on a merry-go-round (rmgr = 2.0 m, Imgr = 1000 kg*m2) with a constant force F = 90 N applied tangentially to the edge of the merry-go-round (i.e., the force is perpendicular to the radius). The merry-go-round resists spinning with a frictional force of f = 10 N acting at a radius of 1 m and a frictional torque τ = 15 N*m...
5) (10 pts) John is baby-sitting Casey, his 3-year old brother. He puts a crash helmet...
5) (10 pts) John is baby-sitting Casey, his 3-year old brother. He puts a crash helmet on Casey, places him in the red wagon and takes him on a stroll through the neighborhood. As John starts across the street, he exerts a 58 N forward force on the wagon. There is a 20 N resistance force (friction) and the wagon and Casey have a combined weight of 302 N. Construct a free body diagram showing all the forces acting upon...
Question 2 A 50 kg skateboarder is planning a trick for an upcoming competition. She starts out riding her 7 kg skateboard with initial speed of 2.5 m/s. She and the skateboard then slide down a slope of height 3 meters. At the bottom of the slope, she steps from the first skateboard onto a second stationary 7 kg skateboard, leaving the first skateboard moving at half the speed it was before the switch. Finally, riding the 2nd skateboard, she...
please explain each step
Question 2 A 50 kg skateboarder is planning a trick for an upcoming competition. She starts out riding her 7 kg skateboard with initial speed of 2.5 m/s. She and the skateboard then slide down a slope of height 3 meters. At the bottom of the slope, she steps from the first skateboard onto a second stationary 7 kg. skateboard, leaving the first skateboard moving at half the speed it was before the switch. Finally, riding...
1) A 48.5-kg skater is standing at rest in front of a wall. By
pushing against the wall she propels herself backward with a
velocity of -1.46 m/s. Her hands are in contact with the wall for
1.00 s. Ignore friction and wind resistance. Find the average force
she exerts on the wall (which has the same magnitude, but opposite
direction, as the force that the wall applies to her). Note that
this force has direction, which you should indicate...
6. A 50-kg front seat passenger in a car moving initially with a speed of 25 m/sisbr rest by an air bag in a time of 0.4 s a) What is the impulse acting on the passenger? b) What is the average force acting on the passenger in this process?? 7. A ball traveling with an initial momentum of 5.0 kg.m/s bounces off a wall and comes back in the opposite direction with a momentum of -4.5 kg.m/s a) What...
5) (10 pts) John is baby-sitting Casey, his 3-year old brother. He puts a crash helmet on Casey, places him in the red wagon and takes him on a stroll through the neighborhood. As John starts across the street, he exerts a 58 N forward force on the wagon. There is a 20 N resistance force (friction) and the wagon and Casey have a combined weight of 302 N. Construct a free body diagram showing all the forces acting upon...
Most questions answered within 3 hours.
-
USE an API
You have a drop down list of 4 cities.
Upon selecting a particular...
asked 1 minute from now -
Which type of chemical reaction is regulated by altering an
enzyme's function?
a.) irreversible
b.) reversible
asked 2 minutes ago -
Supply management is a developing ____________ and an area of
management _______________.
1. discipline / responsibility...
asked 5 minutes ago -
Calculate the mass of acetic acid that must be mixed with
0.88moles of sodium acetate to...
asked 5 minutes ago -
Crown Corporation, a United States Company, made a sale to a
foreign customer on
September 15,...
asked 7 minutes ago -
The complete combustion of acetic acid, HC2H3O2(l) to form
H2O(l) and CO2(g) at constant pressure releases...
asked 19 minutes ago -
What is the effect of using MACRS rather than straight-line
depreciation?
It increases the NPV.
The...
asked 17 minutes ago -
Write a program to create a game map. A game map is a 2D array
of...
asked 26 minutes ago -
2. When a student ran an asymmetric dihydroxylation reaction
using cis-stilbene and the ligand (DHQ)2PHAL, the...
asked 25 minutes ago -
The daily closing price of FPT stock over last year would
be:
A.Time series data
B.Cross...
asked 40 minutes ago -
A hair is placed at one edge between two flat glass plates 10.7
cm long. When...
asked 39 minutes ago -
1. The government has now decided to implement a price ceiling
of $100 in this market....
asked 42 minutes ago