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Mechanics | Relativity
A car accelerates uniformly from rest to 25/m/s/s in 10 seconds. Sketch the graph for displacement versus time graph
Mechanics | Relativity
Which of the following are vector quantities and which are scalar quantities?
your age
acceleration
velocity
speed
mass
your age
acceleration
velocity
speed
mass
Mechanics | Relativity
An electron initially has a speed 19.4 km/s along the x-direction and enters an electric field of strength 24 mV/m that points in the y-direction and has a width of 18.5 cm. How far is the deflection?
Mechanics | Relativity
What impulse occurs when an average force of 12 N is exerted on a cart for 2.4 s ?
Mechanics | Relativity
A body moving with a uniform acceleration has a velocity of 12.0cm/s when its x coordinate is 3.00cm if it's coordinate 2.00s later is -5.00cm, what is the magnitude of it's acceleration.
Mechanics | Relativity
Romeo is at x = 0 at t = 0 when he sees Juliet at x = 6m.
(a) He begins to run towards her at v = 5m=s. She in turn begins to accelerate
towards him at a = ¡2m=s2. When and where will they cross? Sketch their motions
measuring time horizontally and position vertically.
(b) Suppose instead she moved away from him with positive acceleration a. Find
amax, the maximum a for which he will ever catch up with her. For this case ¯nd the
time t of their contact. Show that for smaller values of a these star crossed lovers
will cross twice. Draw a sketch for this case. Explain in words why they cross twice.
(a) He begins to run towards her at v = 5m=s. She in turn begins to accelerate
towards him at a = ¡2m=s2. When and where will they cross? Sketch their motions
measuring time horizontally and position vertically.
(b) Suppose instead she moved away from him with positive acceleration a. Find
amax, the maximum a for which he will ever catch up with her. For this case ¯nd the
time t of their contact. Show that for smaller values of a these star crossed lovers
will cross twice. Draw a sketch for this case. Explain in words why they cross twice.
Mechanics | Relativity
Determine the displacement of a man if he walks 3 miles north then turns right and walks 4
miles east.
miles east.
Mechanics | Relativity
An object is short from the ground at 125m/s at an angle of 30 degree above the horizantal.How far away does the Land.
Mechanics | Relativity
on your wedding day you leave for the church 30.0 minutes before the ceremony is to begin which should be plenty of time since the church is only 10 miles away.on the way however you make an unanticipated for construction work on the road as a result your average speed for the first 15 minutes is only 5.0 mi h what average speed do you need for the rest of the trip to get to the church on time
Mechanics | Relativity
what is the efficiency of pump if 1500 watt and work output 12000 J in 10 seconds
