1. For this case we can use the formulae v=at, where v is velocity, a acceleration, t amount of time.
V=1*6=6 m/s.
2. Frequency is amount of oscillations made in 1 second. In order to evaluate it we need to divide the
number of oscillations to the amount
1.
A rocket with a mass of 4,000 kg has an engine that exerts a force of 25,412 N. What is the rocket's
acceleration (in m/s2) at take-off?
Solution
We use second Newtons law:
F=ma , (*)
Where
F is a force, m is a mass, a is acceleration.
We have
Answer
F
PHY 1001
Unit Six Motion
Mathematical Assignment
1. A wave is sent back and forth along a rope 4 m long with a mass of 0.6 kg by exerting a
force a force of 30 N. Calculate the linear mass density of the rope (in kg/m).
Key Idea
Linear mass density only d
Question 1 (4 points)
Calculate the velocity of a car (in m/s) that starts from rest and accelerates at 3 m/s 2 for 6 seconds.
Your Answer:
Question 1 options:
18
Answer
Save
Question 2 (4 points)
Calculate a pendulum's frequency of oscillation (in Hz) if
1.
A force of 372 N is applied in pushing a stalled automobile at constant speed for a distance of
150 m. How much work (in J) was done on the car by the force?
Solution
We use the next formula for work A:
A=Fr ,
Where
F is a force,
r isa distance.
So we
PHY 1001
Unit One Motion
Mathematical Assignment
1. Calculate the velocity of a car (in m/s) that starts from rest and accelerates at 5 m/s2 for 6
seconds.
Key Idea
Stock of Data and
Acceleration a=5 m/s2, time t=6 s, initial velocity vi=0 m/s. Main idea
PHY 1001
Unit Three Forces and Newtons Laws of Motion
Mathematical Assignment
1. The mass of a train is 30,000 kg. If the train accelerates at 1.1 m/s 2, what net force (in
Newtons) acts on the train?
Key Idea
Stock of Data and
m=30000 kg
a=1.1
m
2 Soluti
PHY 1001
Unit Four Energy
Mathematical Assignment
1. A force of 100 N pushing a 10 kg box over level ground does 300 J of work on the box.
Through what distance was the force applied?
Key Idea
A=300 J
Stock of Data and
m=10 kg
F=100 N
Solution
l=
A=Fl
A 3
Group Projects for Physics
Your Group Project involves a 15-minute (at the minimum) class
presentation making use of the overhead projector for pictures, diagrams,
videos (limit of 3, each no more than I minute long), music, etc. Each
presentation must in