A 1 kg model rocket is launched at a 30 degree angle from the floor. The small rocket burns for 5.00 s and has a steady thrust of 20.0 N. What maximum altitude does the rocket reach and range of the...

A 1 kg model rocket is launched at a 30 degree angle from the floor. The small rocket burns for 5.00 s and has a steady thrust of 20.0 N. What maximum altitude does the rocket reach and range of the...

After a 1.30 x 10^2kg astronaut (incl. equipment) connects a safety line (length = 22.0m) to herself and to the spacecraft (mass = 2.80 x 10^3kg), she pushes against the craft and moves away at a...

The force of gravity between two small masses A and B when placed very near each other is 3.24x10^-7 N. What will the force between these objects be if both of their masses are doubled and the distance...

I've been stuck on this question forever and I keep getting it wrong :( Please help! A truck of mass 3 tonnes is travelling at 105km/h when it hits a car of mass 1.5 tonne travelling...

A car (m=900kg) travelling at 70km/h hits a pedestrian (m=60kg) who is travelling at 1m/s in the same direction. After the collision the car has a velocity of 30km/h in the same direction it was originally...

A 650kg car travelling 5m/s1 NORTH EAST turns so that it is travelling 4m/s1 NORTH in 2 seconds. Calculate the magnitude of the force required to make such a turn.

A 1t car initially travelling at 60kmh^-1 experiences a force of 1000N from the engine, and a frictional force of 130N in the opposite direction. A) Calculate the net force on the car. B)...

A net force acts on mass m1 and creates an acceleration.A mass m2 is added to mass m1.The same net force acting on two mass together creates one-third the acceleration.Determine the ratio m2/m1

When I calculating resultant force in equilateral triangle why there is square root vector formula we will put?

https://postimg.org/image/m5vobypg3/

a.) What is the smallest force parallel to the incline needed to keep the sofa from sliding down? b.) What parallel force is required to keep the sofa moving up the incline at a constant...

https://s11.postimg.org/9f0lz9z1f/equilibrium.jpg

For each situation, determine whether the forces acting on a roller coaster are balanced or unbalanced and explain why using physics terms please: The roller coaster moves at...

You are a roller coaster engineer, and safety inspectors tell you that your roller coaster has too much centripetal force. What can you do to decrease the centripetal foce acting on your roller...

A girl twirls a key chain in a circle if she twirls it faster, she finds that she holds the chain tighter. Explain why this is necessary. I think it's that she has to hold the...

Gabriella (75 kg) rides a roller coaster. What is her acceleration at the top of the vertical loop if she feels like her weight is 1200N? What is Gabriella's...

a 985kg dragster, starting from rest, attains a speed of 43.6 m/s in 0.82 seconds. what is the acceleration of the dragster?

To slide a metal puck across a greased sheet of metal at constant speed requires a force of 0.525 N. If the force of gravity on the puck is 5.00 N, what is the coefficient of friction between the...

A car is travelling at 120 km/hr when it slams on the brakes. a. How long is the skid mark if the coefficient of friction is 0.62? (hint: convert km/hr to m/s) b. Explain why a more massive...

If I were to draw a free body diagram on the "headless horseman" looking for his head, what forces would be acting upon it? Please label and explain. Thank you