For a short time, the speed v of a car, in m / s, is given by v = at2 + bt3, where t is the time in seconds. The units of a and b are, respectively,   a) m/s^2; m/s^3 b) m/s^4; m/s^5 c) s^3/m; s^4/m d) m.s^2; m.s^4 e) m/s^3; m/s^4

Is it possible to add a scalar quantity and a vector quantity? Group of answer choices No, vectors have direction and scalars do not. No, scalars have direction but vectors are just a magnitude. Yes, as long as the units are the same. Yes, but only every other Tuesday.

An Airplane travels at 951 km/h. how long does it take to travel 1.00 km? (SI units, always) (Make sure there is a space between the number and unit.)

What is 71 mph in terms of m/s? 1.000 mile = 1609 m. Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

Problem 1: Suppose A = (-3.03 m)i + (4.35 m)j, B = (2.71 m)i + (-4.29 m)j + (2.99 m)k, and D = (-2.48 m)i + (-4.5 m)j. Part (a) What is the angle, in degrees, between D and A? Numeric : A numeric value is expected and not an expression. Part (b) What is the angle, in degrees, between D and B? Numeric : A numeric value is expected and not an expression.

Which one are units and explain ?

If B is added to A, the result is 8.8î + 3.0ĵ. If B is subtracted from A, the result is -4.61 + 5.6ĵ. What is the magnitude of A? Number i Units

An astronomical unit (AU) is the average distance between the Earth and the Sun, approximately 1.50 × 10° km. The speed of light is about 3.00 x 10° m/s. Express the speed of light in astronomical units per minute. Number Units

The following times are given using metric prefixes on the base SI unit of time: the second. Rewrite them in scientific notation without the prefix (in s). For example, 47 Ts would be rewritten as 4.7 ✕ 1013 s. (Enter your answers as m ✕ 10n, where 1 ≤ |m| < 10  and n is an integer.) 984 Ps 986 fs 19 ns 572 µs

USE THE CORRECT NUMBER OF SIGNIFICANT FIGURES IN THE ANSWER!